x-9=2x+12

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Solution for x-9=2x+12 equation:


Simplifying
x + -9 = 2x + 12

Reorder the terms:
-9 + x = 2x + 12

Reorder the terms:
-9 + x = 12 + 2x

Solving
-9 + x = 12 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-9 + x + -2x = 12 + 2x + -2x

Combine like terms: x + -2x = -1x
-9 + -1x = 12 + 2x + -2x

Combine like terms: 2x + -2x = 0
-9 + -1x = 12 + 0
-9 + -1x = 12

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

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

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

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

Simplifying
x = -21

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