Z+12+4z-12+90=180

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Solution for Z+12+4z-12+90=180 equation: 


Simplifying
Z + 12 + 4z + -12 + 90 = 180

Reorder the terms:
12 + -12 + 90 + Z + 4z = 180

Combine like terms: 12 + -12 = 0
0 + 90 + Z + 4z = 180
90 + Z + 4z = 180

Solving
90 + Z + 4z = 180

Solving for variable 'Z'.

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

Add '-90' to each side of the equation.
90 + Z + -90 + 4z = 180 + -90

Reorder the terms:
90 + -90 + Z + 4z = 180 + -90

Combine like terms: 90 + -90 = 0
0 + Z + 4z = 180 + -90
Z + 4z = 180 + -90

Combine like terms: 180 + -90 = 90
Z + 4z = 90

Add '-4z' to each side of the equation.
Z + 4z + -4z = 90 + -4z

Combine like terms: 4z + -4z = 0
Z + 0 = 90 + -4z
Z = 90 + -4z

Simplifying
Z = 90 + -4z

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