-x+3x+12=25-x

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Solution for -x+3x+12=25-x equation:


Simplifying
-1x + 3x + 12 = 25 + -1x

Reorder the terms:
12 + -1x + 3x = 25 + -1x

Combine like terms: -1x + 3x = 2x
12 + 2x = 25 + -1x

Solving
12 + 2x = 25 + -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.
12 + 2x + x = 25 + -1x + x

Combine like terms: 2x + x = 3x
12 + 3x = 25 + -1x + x

Combine like terms: -1x + x = 0
12 + 3x = 25 + 0
12 + 3x = 25

Add '-12' to each side of the equation.
12 + -12 + 3x = 25 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = 25 + -12
3x = 25 + -12

Combine like terms: 25 + -12 = 13
3x = 13

Divide each side by '3'.
x = 4.333333333

Simplifying
x = 4.333333333

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