5x+7=5x-21

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Solution for 5x+7=5x-21 equation:


Simplifying
5x + 7 = 5x + -21

Reorder the terms:
7 + 5x = 5x + -21

Reorder the terms:
7 + 5x = -21 + 5x

Add '-5x' to each side of the equation.
7 + 5x + -5x = -21 + 5x + -5x

Combine like terms: 5x + -5x = 0
7 + 0 = -21 + 5x + -5x
7 = -21 + 5x + -5x

Combine like terms: 5x + -5x = 0
7 = -21 + 0
7 = -21

Solving
7 = -21

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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