Question

solve for z
1st to answer gets mark brainiest

Answer 1

Answer:

z = -3

Step-by-step explanation:

42 = -7(z - 3)

42 = -7z + 21

-7z = 42 - 21

-7z = 21

z = $\frac{21}{-7}$

z = -3

Answer 2

42 = -7(z - 3)

dividing -7 on both sides

42/-7 =-7(z - 3)/-7

-6 = z - 3

-6 + 3 = z

z = -3

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