21x-6-18x+2=18x-6-15x+11

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Solution for 21x-6-18x+2=18x-6-15x+11 equation: 


Simplifying
21x + -6 + -18x + 2 = 18x + -6 + -15x + 11

Reorder the terms:
-6 + 2 + 21x + -18x = 18x + -6 + -15x + 11

Combine like terms: -6 + 2 = -4
-4 + 21x + -18x = 18x + -6 + -15x + 11

Combine like terms: 21x + -18x = 3x
-4 + 3x = 18x + -6 + -15x + 11

Reorder the terms:
-4 + 3x = -6 + 11 + 18x + -15x

Combine like terms: -6 + 11 = 5
-4 + 3x = 5 + 18x + -15x

Combine like terms: 18x + -15x = 3x
-4 + 3x = 5 + 3x

Add '-3x' to each side of the equation.
-4 + 3x + -3x = 5 + 3x + -3x

Combine like terms: 3x + -3x = 0
-4 + 0 = 5 + 3x + -3x
-4 = 5 + 3x + -3x

Combine like terms: 3x + -3x = 0
-4 = 5 + 0
-4 = 5

Solving
-4 = 5

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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