what is the value of n in the equation shown? a b c d

Explanation:

Step1: Represent fractions

The first fraction is $\frac{3}{4}$ (3 out of 4 parts shaded), and the second - fraction is $\frac{1}{2}$ (1 out of 2 parts shaded). The equation is $\frac{3}{4}-n=\frac{1}{2}$.

Step2: Solve for n

We can rewrite the equation as $n = \frac{3}{4}-\frac{1}{2}$. Since $\frac{1}{2}=\frac{2}{4}$, then $n=\frac{3}{4}-\frac{2}{4}=\frac{1}{4}$. The fraction $\frac{1}{4}$ is represented by 1 out of 4 parts shaded.

Answer:

D.