Question

O FRACTIONSWriting unit fractions with a common denominator to add or...11Let's find312First, write the subtraction so the fractions have denominator 12.Then subtract.113121212?

Answer 1

Step 1

Given;

$\frac{1}{3}-\frac{1}{12}$

Required; To write the subtraction so that the denominators are all 12. Then subtract.

Step 2

Use equivalent fractions to make the denominator of 1/3 12

$\begin{gathered} \frac{1}{3}=\frac{x}{12} \\ 12=3x \\ \frac{3x}{3}=\frac{12}{3} \\ x=4 \end{gathered}$

Therefore, we will have;

$\frac{1}{3}-\frac{1}{12}=\frac{4}{12}-\frac{1}{12}$$\frac{4}{12}-\frac{1}{12}=\frac{3}{12}=\frac{1}{4}$

The answer will thus be;

$\frac{1}{3}-\frac{1}{12}=\frac{4}{12}-\frac{1}{12}=\frac{3}{12\text{ }}\text{ which is =}\frac{1}{4}$

Answer = 3/12 or 1/4 when reduced