12+(3-2x)=-x

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Solution for 12+(3-2x)=-x equation:


Simplifying
12 + (3 + -2x) = -1x

Remove parenthesis around (3 + -2x)
12 + 3 + -2x = -1x

Combine like terms: 12 + 3 = 15
15 + -2x = -1x

Solving
15 + -2x = -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
15 + -2x + x = -1x + x

Combine like terms: -2x + x = -1x
15 + -1x = -1x + x

Combine like terms: -1x + x = 0
15 + -1x = 0

Add '-15' to each side of the equation.
15 + -15 + -1x = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -1x = 0 + -15
-1x = 0 + -15

Combine like terms: 0 + -15 = -15
-1x = -15

Divide each side by '-1'.
x = 15

Simplifying
x = 15

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