(7x-1)+(2x+1)=180

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Solution for (7x-1)+(2x+1)=180 equation:


Simplifying
(7x + -1) + (2x + 1) = 180

Reorder the terms:
(-1 + 7x) + (2x + 1) = 180

Remove parenthesis around (-1 + 7x)
-1 + 7x + (2x + 1) = 180

Reorder the terms:
-1 + 7x + (1 + 2x) = 180

Remove parenthesis around (1 + 2x)
-1 + 7x + 1 + 2x = 180

Reorder the terms:
-1 + 1 + 7x + 2x = 180

Combine like terms: -1 + 1 = 0
0 + 7x + 2x = 180
7x + 2x = 180

Combine like terms: 7x + 2x = 9x
9x = 180

Solving
9x = 180

Solving for variable 'x'.

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

Divide each side by '9'.
x = 20

Simplifying
x = 20

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