21x-9-13x+2=20x-8-12x+17

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Solution for 21x-9-13x+2=20x-8-12x+17 equation: 


Simplifying
21x + -9 + -13x + 2 = 20x + -8 + -12x + 17

Reorder the terms:
-9 + 2 + 21x + -13x = 20x + -8 + -12x + 17

Combine like terms: -9 + 2 = -7
-7 + 21x + -13x = 20x + -8 + -12x + 17

Combine like terms: 21x + -13x = 8x
-7 + 8x = 20x + -8 + -12x + 17

Reorder the terms:
-7 + 8x = -8 + 17 + 20x + -12x

Combine like terms: -8 + 17 = 9
-7 + 8x = 9 + 20x + -12x

Combine like terms: 20x + -12x = 8x
-7 + 8x = 9 + 8x

Add '-8x' to each side of the equation.
-7 + 8x + -8x = 9 + 8x + -8x

Combine like terms: 8x + -8x = 0
-7 + 0 = 9 + 8x + -8x
-7 = 9 + 8x + -8x

Combine like terms: 8x + -8x = 0
-7 = 9 + 0
-7 = 9

Solving
-7 = 9

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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