21x-8-18x+4=16x-9-13x+12

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Solution for 21x-8-18x+4=16x-9-13x+12 equation:


Simplifying
21x + -8 + -18x + 4 = 16x + -9 + -13x + 12

Reorder the terms:
-8 + 4 + 21x + -18x = 16x + -9 + -13x + 12

Combine like terms: -8 + 4 = -4
-4 + 21x + -18x = 16x + -9 + -13x + 12

Combine like terms: 21x + -18x = 3x
-4 + 3x = 16x + -9 + -13x + 12

Reorder the terms:
-4 + 3x = -9 + 12 + 16x + -13x

Combine like terms: -9 + 12 = 3
-4 + 3x = 3 + 16x + -13x

Combine like terms: 16x + -13x = 3x
-4 + 3x = 3 + 3x

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

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

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

Solving
-4 = 3

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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