## Basic College Mathematics (10th Edition)

$z=\frac{87}{8}$
We are given the equation $z-\frac{7}{8}=10$. Add $\frac{7}{8}$ to both sides. $z-\frac{7}{8}+\frac{7}{8}=10+\frac{7}{8}$ $z+0=10+\frac{7}{8}=\frac{80}{8}+\frac{7}{8}=\frac{80+7}{8}=\frac{87}{8}$ $z+0=\frac{87}{8}$ Therefore, $z=\frac{87}{8}$.