9-2x+12=13

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Solution for 9-2x+12=13 equation: 


Simplifying
9 + -2x + 12 = 13

Reorder the terms:
9 + 12 + -2x = 13

Combine like terms: 9 + 12 = 21
21 + -2x = 13

Solving
21 + -2x = 13

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + -2x = 13 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = 13 + -21
-2x = 13 + -21

Combine like terms: 13 + -21 = -8
-2x = -8

Divide each side by '-2'.
x = 4

Simplifying
x = 4

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