3x+6+6x-3+9x-12=180

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Solution for 3x+6+6x-3+9x-12=180 equation:


Simplifying
3x + 6 + 6x + -3 + 9x + -12 = 180

Reorder the terms:
6 + -3 + -12 + 3x + 6x + 9x = 180

Combine like terms: 6 + -3 = 3
3 + -12 + 3x + 6x + 9x = 180

Combine like terms: 3 + -12 = -9
-9 + 3x + 6x + 9x = 180

Combine like terms: 3x + 6x = 9x
-9 + 9x + 9x = 180

Combine like terms: 9x + 9x = 18x
-9 + 18x = 180

Solving
-9 + 18x = 180

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 18x = 180 + 9

Combine like terms: -9 + 9 = 0
0 + 18x = 180 + 9
18x = 180 + 9

Combine like terms: 180 + 9 = 189
18x = 189

Divide each side by '18'.
x = 10.5

Simplifying
x = 10.5

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