17-2x-21=3x-x-12

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Solution for 17-2x-21=3x-x-12 equation:


Simplifying
17 + -2x + -21 = 3x + -1x + -12

Reorder the terms:
17 + -21 + -2x = 3x + -1x + -12

Combine like terms: 17 + -21 = -4
-4 + -2x = 3x + -1x + -12

Reorder the terms:
-4 + -2x = -12 + 3x + -1x

Combine like terms: 3x + -1x = 2x
-4 + -2x = -12 + 2x

Solving
-4 + -2x = -12 + 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.
-4 + -2x + -2x = -12 + 2x + -2x

Combine like terms: -2x + -2x = -4x
-4 + -4x = -12 + 2x + -2x

Combine like terms: 2x + -2x = 0
-4 + -4x = -12 + 0
-4 + -4x = -12

Add '4' to each side of the equation.
-4 + 4 + -4x = -12 + 4

Combine like terms: -4 + 4 = 0
0 + -4x = -12 + 4
-4x = -12 + 4

Combine like terms: -12 + 4 = -8
-4x = -8

Divide each side by '-4'.
x = 2

Simplifying
x = 2

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