Question

the circle below represents a whole, or 1. use subtraction to determine the unknown part of the circle. figure not drawn to scale

Explanation:

Step1: Set up the subtraction equation

The whole circle is 1, which can be written as $\frac{15}{15}$. We know two - parts $\frac{1}{15}$ and $\frac{9}{15}$. Let the unknown part be $x$. Then $x=\frac{15}{15}-\frac{1}{15}-\frac{9}{15}$.

Step2: Perform the subtraction

$x=\frac{15 - 1-9}{15}=\frac{5}{15}=\frac{1}{3}$

Answer:

$\frac{1}{3}$