Finding the GCD of 14 and 72

Oct 13, 2025 by talynt.org 142 views

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Introduction

When working with fractions, it's essential to express them in their simplest form. This means that the numerator and denominator should have no common factors other than 1. In this article, we will explore how to express the fraction $\frac{14}{72}$ in its simplest form.

What is a Fraction in Simplest Form?

A fraction is in its simplest form when the numerator and denominator have no common factors other than 1. This means that the fraction cannot be reduced any further. For example, the fraction $\frac{2}{4}$ is not in its simplest form because both 2 and 4 are divisible by 2. However, the fraction $\frac{1}{2}$ is in its simplest form because 1 and 2 have no common factors other than 1.

Finding the Greatest Common Divisor (GCD)

To express a fraction in its simplest form, we need to find the greatest common divisor (GCD) of the numerator and denominator. The GCD is the largest number that divides both numbers without leaving a remainder. For example, the GCD of 12 and 18 is 6 because 6 is the largest number that divides both 12 and 18 without leaving a remainder.

Finding the GCD of 14 and 72

To find the GCD of 14 and 72, we can use the Euclidean algorithm. This algorithm involves dividing the larger number by the smaller number and then replacing the larger number with the remainder. We repeat this process until the remainder is 0.

Step 1: Divide 72 by 14

When we divide 72 by 14, we get a quotient of 5 and a remainder of 2.

Step 2: Replace 72 with the remainder

We replace 72 with the remainder, which is 2.

Step 3: Divide 14 by 2

When we divide 14 by 2, we get a quotient of 7 and a remainder of 0.

Step 4: The GCD is 2

Since the remainder is 0, we know that the GCD of 14 and 72 is 2.

Expressing the Fraction in Simplest Form

Now that we have found the GCD of 14 and 72, we can express the fraction $\frac{14}{72}$ in its simplest form. We do this by dividing both the numerator and denominator by the GCD.

$\frac{14}{72} = \frac{14 \div 2}{72 \div 2} = \frac{7}{36}$

Therefore, the fraction $\frac{14}{72}$ in its simplest form is $\frac{7}{36}$ .

Conclusion

Expressing fractions in simplest form is an essential skill in mathematics. By finding the greatest common divisor (GCD) of the numerator and denominator, we can simplify fractions and make them easier to work with. In this article, we have shown how to express the fraction $\frac{14}{72}$ in its simplest form by finding the GCD and dividing both the numerator and denominator by it.

Frequently Asked Questions

What is a fraction in simplest form? A fraction is in its simplest form when the numerator and denominator have no common factors other than 1.
How do I find the greatest common divisor (GCD) of two numbers? You can use the Euclidean algorithm to find the GCD of two numbers.
How do I express a fraction in simplest form? You can express a fraction in simplest form by finding the GCD of the numerator and denominator and dividing both numbers by it.

Introduction

Simplifying fractions is an essential skill in mathematics. In our previous article, we discussed how to express the fraction $\frac{14}{72}$ in its simplest form. In this article, we will answer some frequently asked questions about simplifying fractions.

Q&A

Q: What is a fraction in simplest form?

A: A fraction is in its simplest form when the numerator and denominator have no common factors other than 1.

Q: How do I find the greatest common divisor (GCD) of two numbers?

A: You can use the Euclidean algorithm to find the GCD of two numbers. The Euclidean algorithm involves dividing the larger number by the smaller number and then replacing the larger number with the remainder. You repeat this process until the remainder is 0.

Q: How do I express a fraction in simplest form?

A: You can express a fraction in simplest form by finding the GCD of the numerator and denominator and dividing both numbers by it.

Q: What is the difference between a simplified fraction and a reduced fraction?

A: A simplified fraction is a fraction that has been expressed in its simplest form, while a reduced fraction is a fraction that has been reduced to its lowest terms. For example, the fraction $\frac{2}{4}$ can be reduced to $\frac{1}{2}$ , but it is not in its simplest form because both 2 and 4 are divisible by 2.

Q: Can I simplify a fraction with a negative numerator or denominator?

A: Yes, you can simplify a fraction with a negative numerator or denominator. To do this, you need to find the GCD of the absolute values of the numerator and denominator and then divide both numbers by it.

Q: How do I simplify a fraction with a variable in the numerator or denominator?

A: To simplify a fraction with a variable in the numerator or denominator, you need to find the GCD of the variable and the other number and then divide both numbers by it.

Q: Can I simplify a fraction with a decimal in the numerator or denominator?

A: No, you cannot simplify a fraction with a decimal in the numerator or denominator. To simplify a fraction, you need to have whole numbers in the numerator and denominator.

Examples

Example 1: Simplifying a fraction with a negative numerator

$\frac{-12}{18} = \frac{-12 \div 6}{18 \div 6} = \frac{-2}{3}$

Example 2: Simplifying a fraction with a variable in the numerator

$\frac{2x}{4x} = \frac{2x \div 2x}{4x \div 2x} = \frac{1}{2}$

Example 3: Simplifying a fraction with a decimal in the numerator

$\frac{0.5}{2} = \frac{0.5 \div 0.5}{2 \div 0.5} = \frac{1}{4}$

Conclusion

Simplifying fractions is an essential skill in mathematics. By understanding how to find the greatest common divisor (GCD) of two numbers and dividing both numbers by it, you can simplify fractions and make them easier to work with. In this article, we have answered some frequently asked questions about simplifying fractions and provided examples to illustrate the concepts.