9x+12+3x=4x-8-12

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Solution for 9x+12+3x=4x-8-12 equation:


Simplifying
9x + 12 + 3x = 4x + -8 + -12

Reorder the terms:
12 + 9x + 3x = 4x + -8 + -12

Combine like terms: 9x + 3x = 12x
12 + 12x = 4x + -8 + -12

Reorder the terms:
12 + 12x = -8 + -12 + 4x

Combine like terms: -8 + -12 = -20
12 + 12x = -20 + 4x

Solving
12 + 12x = -20 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
12 + 12x + -4x = -20 + 4x + -4x

Combine like terms: 12x + -4x = 8x
12 + 8x = -20 + 4x + -4x

Combine like terms: 4x + -4x = 0
12 + 8x = -20 + 0
12 + 8x = -20

Add '-12' to each side of the equation.
12 + -12 + 8x = -20 + -12

Combine like terms: 12 + -12 = 0
0 + 8x = -20 + -12
8x = -20 + -12

Combine like terms: -20 + -12 = -32
8x = -32

Divide each side by '8'.
x = -4

Simplifying
x = -4

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