3x+7x+40=20x+120

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Solution for 3x+7x+40=20x+120 equation:


Simplifying
3x + 7x + 40 = 20x + 120

Reorder the terms:
40 + 3x + 7x = 20x + 120

Combine like terms: 3x + 7x = 10x
40 + 10x = 20x + 120

Reorder the terms:
40 + 10x = 120 + 20x

Solving
40 + 10x = 120 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
40 + 10x + -20x = 120 + 20x + -20x

Combine like terms: 10x + -20x = -10x
40 + -10x = 120 + 20x + -20x

Combine like terms: 20x + -20x = 0
40 + -10x = 120 + 0
40 + -10x = 120

Add '-40' to each side of the equation.
40 + -40 + -10x = 120 + -40

Combine like terms: 40 + -40 = 0
0 + -10x = 120 + -40
-10x = 120 + -40

Combine like terms: 120 + -40 = 80
-10x = 80

Divide each side by '-10'.
x = -8

Simplifying
x = -8

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