12x+7-9x=-4x-9+9x

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Solution for 12x+7-9x=-4x-9+9x equation:


Simplifying
12x + 7 + -9x = -4x + -9 + 9x

Reorder the terms:
7 + 12x + -9x = -4x + -9 + 9x

Combine like terms: 12x + -9x = 3x
7 + 3x = -4x + -9 + 9x

Reorder the terms:
7 + 3x = -9 + -4x + 9x

Combine like terms: -4x + 9x = 5x
7 + 3x = -9 + 5x

Solving
7 + 3x = -9 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
7 + 3x + -5x = -9 + 5x + -5x

Combine like terms: 3x + -5x = -2x
7 + -2x = -9 + 5x + -5x

Combine like terms: 5x + -5x = 0
7 + -2x = -9 + 0
7 + -2x = -9

Add '-7' to each side of the equation.
7 + -7 + -2x = -9 + -7

Combine like terms: 7 + -7 = 0
0 + -2x = -9 + -7
-2x = -9 + -7

Combine like terms: -9 + -7 = -16
-2x = -16

Divide each side by '-2'.
x = 8

Simplifying
x = 8

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