3x+7+12x=20x-8-30

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Solution for 3x+7+12x=20x-8-30 equation:


Simplifying
3x + 7 + 12x = 20x + -8 + -30

Reorder the terms:
7 + 3x + 12x = 20x + -8 + -30

Combine like terms: 3x + 12x = 15x
7 + 15x = 20x + -8 + -30

Reorder the terms:
7 + 15x = -8 + -30 + 20x

Combine like terms: -8 + -30 = -38
7 + 15x = -38 + 20x

Solving
7 + 15x = -38 + 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.
7 + 15x + -20x = -38 + 20x + -20x

Combine like terms: 15x + -20x = -5x
7 + -5x = -38 + 20x + -20x

Combine like terms: 20x + -20x = 0
7 + -5x = -38 + 0
7 + -5x = -38

Add '-7' to each side of the equation.
7 + -7 + -5x = -38 + -7

Combine like terms: 7 + -7 = 0
0 + -5x = -38 + -7
-5x = -38 + -7

Combine like terms: -38 + -7 = -45
-5x = -45

Divide each side by '-5'.
x = 9

Simplifying
x = 9

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