(7x-9)+(x+9)+(2x)=180

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Solution for (7x-9)+(x+9)+(2x)=180 equation: 


Simplifying
(7x + -9) + (x + 9) + (2x) = 180

Reorder the terms:
(-9 + 7x) + (x + 9) + (2x) = 180

Remove parenthesis around (-9 + 7x)
-9 + 7x + (x + 9) + (2x) = 180

Reorder the terms:
-9 + 7x + (9 + x) + (2x) = 180

Remove parenthesis around (9 + x)
-9 + 7x + 9 + x + (2x) = 180

Reorder the terms:
-9 + 9 + 7x + x + (2x) = 180

Combine like terms: -9 + 9 = 0
0 + 7x + x + (2x) = 180
7x + x + (2x) = 180

Combine like terms: 7x + x = 8x
8x + (2x) = 180

Combine like terms: 8x + (2x) = 10x
10x = 180

Solving
10x = 180

Solving for variable 'x'.

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

Divide each side by '10'.
x = 18

Simplifying
x = 18

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