z+2+7z-8+90=180

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Solution for z+2+7z-8+90=180 equation:


Simplifying
z + 2 + 7z + -8 + 90 = 180

Reorder the terms:
2 + -8 + 90 + z + 7z = 180

Combine like terms: 2 + -8 = -6
-6 + 90 + z + 7z = 180

Combine like terms: -6 + 90 = 84
84 + z + 7z = 180

Combine like terms: z + 7z = 8z
84 + 8z = 180

Solving
84 + 8z = 180

Solving for variable 'z'.

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

Add '-84' to each side of the equation.
84 + -84 + 8z = 180 + -84

Combine like terms: 84 + -84 = 0
0 + 8z = 180 + -84
8z = 180 + -84

Combine like terms: 180 + -84 = 96
8z = 96

Divide each side by '8'.
z = 12

Simplifying
z = 12

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