Question

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

Answer 1

z=-3

Step-by-step explanation

`42=-7(z-3)`

Step 1

divide both sides by -7

`\begin{gathered} 42=-7(z-3) \\ (42)/(-7)=(-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