21x-7-15x-2=20x-4-14x-13

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Solution for 21x-7-15x-2=20x-4-14x-13 equation: 


Simplifying
21x + -7 + -15x + -2 = 20x + -4 + -14x + -13

Reorder the terms:
-7 + -2 + 21x + -15x = 20x + -4 + -14x + -13

Combine like terms: -7 + -2 = -9
-9 + 21x + -15x = 20x + -4 + -14x + -13

Combine like terms: 21x + -15x = 6x
-9 + 6x = 20x + -4 + -14x + -13

Reorder the terms:
-9 + 6x = -4 + -13 + 20x + -14x

Combine like terms: -4 + -13 = -17
-9 + 6x = -17 + 20x + -14x

Combine like terms: 20x + -14x = 6x
-9 + 6x = -17 + 6x

Add '-6x' to each side of the equation.
-9 + 6x + -6x = -17 + 6x + -6x

Combine like terms: 6x + -6x = 0
-9 + 0 = -17 + 6x + -6x
-9 = -17 + 6x + -6x

Combine like terms: 6x + -6x = 0
-9 = -17 + 0
-9 = -17

Solving
-9 = -17

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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