12x+7=9x-8

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Solution for 12x+7=9x-8 equation:


Simplifying
12x + 7 = 9x + -8

Reorder the terms:
7 + 12x = 9x + -8

Reorder the terms:
7 + 12x = -8 + 9x

Solving
7 + 12x = -8 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
7 + 12x + -9x = -8 + 9x + -9x

Combine like terms: 12x + -9x = 3x
7 + 3x = -8 + 9x + -9x

Combine like terms: 9x + -9x = 0
7 + 3x = -8 + 0
7 + 3x = -8

Add '-7' to each side of the equation.
7 + -7 + 3x = -8 + -7

Combine like terms: 7 + -7 = 0
0 + 3x = -8 + -7
3x = -8 + -7

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

Divide each side by '3'.
x = -5

Simplifying
x = -5

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