7z+1+2z-10=90

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Solution for 7z+1+2z-10=90 equation:


Simplifying
7z + 1 + 2z + -10 = 90

Reorder the terms:
1 + -10 + 7z + 2z = 90

Combine like terms: 1 + -10 = -9
-9 + 7z + 2z = 90

Combine like terms: 7z + 2z = 9z
-9 + 9z = 90

Solving
-9 + 9z = 90

Solving for variable 'z'.

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

Add '9' to each side of the equation.
-9 + 9 + 9z = 90 + 9

Combine like terms: -9 + 9 = 0
0 + 9z = 90 + 9
9z = 90 + 9

Combine like terms: 90 + 9 = 99
9z = 99

Divide each side by '9'.
z = 11

Simplifying
z = 11

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