Question

42=-7(z-3) what does a equals?

Answer 1

z=-3

Explanation

$42=-7(z-3)$

Step 1

divide both sides by -7

$\begin{gathered} 42=-7(z-3) \\ \frac{42}{-7}=\frac{-7(z-3)}{-7} \\ -6=(z-3) \\ -6=z-3 \end{gathered}$

Step 2

add 3 in both sides

$\begin{gathered} -6=z-3 \\ -6+3=z-3+3 \\ -3=z \\ \end{gathered}$

so,the answer is

z=-3