-40x+18+-20x+3+-15x+9=180

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Solution for -40x+18+-20x+3+-15x+9=180 equation: 


Simplifying
-40x + 18 + -20x + 3 + -15x + 9 = 180

Reorder the terms:
18 + 3 + 9 + -40x + -20x + -15x = 180

Combine like terms: 18 + 3 = 21
21 + 9 + -40x + -20x + -15x = 180

Combine like terms: 21 + 9 = 30
30 + -40x + -20x + -15x = 180

Combine like terms: -40x + -20x = -60x
30 + -60x + -15x = 180

Combine like terms: -60x + -15x = -75x
30 + -75x = 180

Solving
30 + -75x = 180

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + -75x = 180 + -30

Combine like terms: 30 + -30 = 0
0 + -75x = 180 + -30
-75x = 180 + -30

Combine like terms: 180 + -30 = 150
-75x = 150

Divide each side by '-75'.
x = -2

Simplifying
x = -2

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