(9x+21)+(11x-1)=180

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Solution for (9x+21)+(11x-1)=180 equation:


Simplifying
(9x + 21) + (11x + -1) = 180

Reorder the terms:
(21 + 9x) + (11x + -1) = 180

Remove parenthesis around (21 + 9x)
21 + 9x + (11x + -1) = 180

Reorder the terms:
21 + 9x + (-1 + 11x) = 180

Remove parenthesis around (-1 + 11x)
21 + 9x + -1 + 11x = 180

Reorder the terms:
21 + -1 + 9x + 11x = 180

Combine like terms: 21 + -1 = 20
20 + 9x + 11x = 180

Combine like terms: 9x + 11x = 20x
20 + 20x = 180

Solving
20 + 20x = 180

Solving for variable 'x'.

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

Add '-20' to each side of the equation.
20 + -20 + 20x = 180 + -20

Combine like terms: 20 + -20 = 0
0 + 20x = 180 + -20
20x = 180 + -20

Combine like terms: 180 + -20 = 160
20x = 160

Divide each side by '20'.
x = 8

Simplifying
x = 8

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