7z+7+3z-7=90

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Solution for 7z+7+3z-7=90 equation: 


Simplifying
7z + 7 + 3z + -7 = 90

Reorder the terms:
7 + -7 + 7z + 3z = 90

Combine like terms: 7 + -7 = 0
0 + 7z + 3z = 90
7z + 3z = 90

Combine like terms: 7z + 3z = 10z
10z = 90

Solving
10z = 90

Solving for variable 'z'.

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

Divide each side by '10'.
z = 9

Simplifying
z = 9

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