21x-7-14x+3=21x-8-14x+15

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Solution for 21x-7-14x+3=21x-8-14x+15 equation: 


Simplifying
21x + -7 + -14x + 3 = 21x + -8 + -14x + 15

Reorder the terms:
-7 + 3 + 21x + -14x = 21x + -8 + -14x + 15

Combine like terms: -7 + 3 = -4
-4 + 21x + -14x = 21x + -8 + -14x + 15

Combine like terms: 21x + -14x = 7x
-4 + 7x = 21x + -8 + -14x + 15

Reorder the terms:
-4 + 7x = -8 + 15 + 21x + -14x

Combine like terms: -8 + 15 = 7
-4 + 7x = 7 + 21x + -14x

Combine like terms: 21x + -14x = 7x
-4 + 7x = 7 + 7x

Add '-7x' to each side of the equation.
-4 + 7x + -7x = 7 + 7x + -7x

Combine like terms: 7x + -7x = 0
-4 + 0 = 7 + 7x + -7x
-4 = 7 + 7x + -7x

Combine like terms: 7x + -7x = 0
-4 = 7 + 0
-4 = 7

Solving
-4 = 7

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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