7-2x+9=12

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Solution for 7-2x+9=12 equation: 


Simplifying
7 + -2x + 9 = 12

Reorder the terms:
7 + 9 + -2x = 12

Combine like terms: 7 + 9 = 16
16 + -2x = 12

Solving
16 + -2x = 12

Solving for variable 'x'.

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

Add '-16' to each side of the equation.
16 + -16 + -2x = 12 + -16

Combine like terms: 16 + -16 = 0
0 + -2x = 12 + -16
-2x = 12 + -16

Combine like terms: 12 + -16 = -4
-2x = -4

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

Simplifying
x = 2

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