7z-7=42

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Solution for 7z-7=42 equation: 


Simplifying
7z + -7 = 42

Reorder the terms:
-7 + 7z = 42

Solving
-7 + 7z = 42

Solving for variable 'z'.

Move all terms containing z to the left, all other terms to the right.

Add '7' to each side of the equation.
-7 + 7 + 7z = 42 + 7

Combine like terms: -7 + 7 = 0
0 + 7z = 42 + 7
7z = 42 + 7

Combine like terms: 42 + 7 = 49
7z = 49

Divide each side by '7'.
z = 7

Simplifying
z = 7

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