40-(3x)=12-x

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Solution for 40-(3x)=12-x equation:


Simplifying
40 + -1(3x) = 12 + -1x

Remove parenthesis around (3x)
40 + -1 * 3x = 12 + -1x

Multiply -1 * 3
40 + -3x = 12 + -1x

Solving
40 + -3x = 12 + -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.
40 + -3x + x = 12 + -1x + x

Combine like terms: -3x + x = -2x
40 + -2x = 12 + -1x + x

Combine like terms: -1x + x = 0
40 + -2x = 12 + 0
40 + -2x = 12

Add '-40' to each side of the equation.
40 + -40 + -2x = 12 + -40

Combine like terms: 40 + -40 = 0
0 + -2x = 12 + -40
-2x = 12 + -40

Combine like terms: 12 + -40 = -28
-2x = -28

Divide each side by '-2'.
x = 14

Simplifying
x = 14

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