2x+21-6x=-12+x-7

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Solution for 2x+21-6x=-12+x-7 equation:


Simplifying
2x + 21 + -6x = -12 + x + -7

Reorder the terms:
21 + 2x + -6x = -12 + x + -7

Combine like terms: 2x + -6x = -4x
21 + -4x = -12 + x + -7

Reorder the terms:
21 + -4x = -12 + -7 + x

Combine like terms: -12 + -7 = -19
21 + -4x = -19 + x

Solving
21 + -4x = -19 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
21 + -4x + -1x = -19 + x + -1x

Combine like terms: -4x + -1x = -5x
21 + -5x = -19 + x + -1x

Combine like terms: x + -1x = 0
21 + -5x = -19 + 0
21 + -5x = -19

Add '-21' to each side of the equation.
21 + -21 + -5x = -19 + -21

Combine like terms: 21 + -21 = 0
0 + -5x = -19 + -21
-5x = -19 + -21

Combine like terms: -19 + -21 = -40
-5x = -40

Divide each side by '-5'.
x = 8

Simplifying
x = 8

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