3x-18+x+9+x-11=180

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Solution for 3x-18+x+9+x-11=180 equation: 


Simplifying
3x + -18 + x + 9 + x + -11 = 180

Reorder the terms:
-18 + 9 + -11 + 3x + x + x = 180

Combine like terms: -18 + 9 = -9
-9 + -11 + 3x + x + x = 180

Combine like terms: -9 + -11 = -20
-20 + 3x + x + x = 180

Combine like terms: 3x + x = 4x
-20 + 4x + x = 180

Combine like terms: 4x + x = 5x
-20 + 5x = 180

Solving
-20 + 5x = 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 + 5x = 180 + 20

Combine like terms: -20 + 20 = 0
0 + 5x = 180 + 20
5x = 180 + 20

Combine like terms: 180 + 20 = 200
5x = 200

Divide each side by '5'.
x = 40

Simplifying
x = 40

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