9+12=2x-2

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


Simplifying
9 + 12 = 2x + -2

Combine like terms: 9 + 12 = 21
21 = 2x + -2

Reorder the terms:
21 = -2 + 2x

Solving
21 = -2 + 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.
21 + -2x = -2 + 2x + -2x

Combine like terms: 2x + -2x = 0
21 + -2x = -2 + 0
21 + -2x = -2

Add '-21' to each side of the equation.
21 + -21 + -2x = -2 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = -2 + -21
-2x = -2 + -21

Combine like terms: -2 + -21 = -23
-2x = -23

Divide each side by '-2'.
x = 11.5

Simplifying
x = 11.5

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