(z+12)+(4z-7)+90=180

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Solution for (z+12)+(4z-7)+90=180 equation:


Simplifying
(z + 12) + (4z + -7) + 90 = 180

Reorder the terms:
(12 + z) + (4z + -7) + 90 = 180

Remove parenthesis around (12 + z)
12 + z + (4z + -7) + 90 = 180

Reorder the terms:
12 + z + (-7 + 4z) + 90 = 180

Remove parenthesis around (-7 + 4z)
12 + z + -7 + 4z + 90 = 180

Reorder the terms:
12 + -7 + 90 + z + 4z = 180

Combine like terms: 12 + -7 = 5
5 + 90 + z + 4z = 180

Combine like terms: 5 + 90 = 95
95 + z + 4z = 180

Combine like terms: z + 4z = 5z
95 + 5z = 180

Solving
95 + 5z = 180

Solving for variable 'z'.

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

Add '-95' to each side of the equation.
95 + -95 + 5z = 180 + -95

Combine like terms: 95 + -95 = 0
0 + 5z = 180 + -95
5z = 180 + -95

Combine like terms: 180 + -95 = 85
5z = 85

Divide each side by '5'.
z = 17

Simplifying
z = 17

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