-9x-12=-8x+9

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


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

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

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

Solving
-12 + -9x = 9 + -8x

Solving for variable 'x'.

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

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

Combine like terms: -9x + 8x = -1x
-12 + -1x = 9 + -8x + 8x

Combine like terms: -8x + 8x = 0
-12 + -1x = 9 + 0
-12 + -1x = 9

Add '12' to each side of the equation.
-12 + 12 + -1x = 9 + 12

Combine like terms: -12 + 12 = 0
0 + -1x = 9 + 12
-1x = 9 + 12

Combine like terms: 9 + 12 = 21
-1x = 21

Divide each side by '-1'.
x = -21

Simplifying
x = -21

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