3x-(6x-6)=2x+21

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Solution for 3x-(6x-6)=2x+21 equation:


Simplifying
3x + -1(6x + -6) = 2x + 21

Reorder the terms:
3x + -1(-6 + 6x) = 2x + 21
3x + (-6 * -1 + 6x * -1) = 2x + 21
3x + (6 + -6x) = 2x + 21

Reorder the terms:
6 + 3x + -6x = 2x + 21

Combine like terms: 3x + -6x = -3x
6 + -3x = 2x + 21

Reorder the terms:
6 + -3x = 21 + 2x

Solving
6 + -3x = 21 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
6 + -3x + -2x = 21 + 2x + -2x

Combine like terms: -3x + -2x = -5x
6 + -5x = 21 + 2x + -2x

Combine like terms: 2x + -2x = 0
6 + -5x = 21 + 0
6 + -5x = 21

Add '-6' to each side of the equation.
6 + -6 + -5x = 21 + -6

Combine like terms: 6 + -6 = 0
0 + -5x = 21 + -6
-5x = 21 + -6

Combine like terms: 21 + -6 = 15
-5x = 15

Divide each side by '-5'.
x = -3

Simplifying
x = -3

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