90+(8x-1)+(4x+7)=180

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Solution for 90+(8x-1)+(4x+7)=180 equation: 


Simplifying
90 + (8x + -1) + (4x + 7) = 180

Reorder the terms:
90 + (-1 + 8x) + (4x + 7) = 180

Remove parenthesis around (-1 + 8x)
90 + -1 + 8x + (4x + 7) = 180

Reorder the terms:
90 + -1 + 8x + (7 + 4x) = 180

Remove parenthesis around (7 + 4x)
90 + -1 + 8x + 7 + 4x = 180

Reorder the terms:
90 + -1 + 7 + 8x + 4x = 180

Combine like terms: 90 + -1 = 89
89 + 7 + 8x + 4x = 180

Combine like terms: 89 + 7 = 96
96 + 8x + 4x = 180

Combine like terms: 8x + 4x = 12x
96 + 12x = 180

Solving
96 + 12x = 180

Solving for variable 'x'.

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

Add '-96' to each side of the equation.
96 + -96 + 12x = 180 + -96

Combine like terms: 96 + -96 = 0
0 + 12x = 180 + -96
12x = 180 + -96

Combine like terms: 180 + -96 = 84
12x = 84

Divide each side by '12'.
x = 7

Simplifying
x = 7

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