-x+8x-21=7x+7

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Solution for -x+8x-21=7x+7 equation:


Simplifying
-1x + 8x + -21 = 7x + 7

Reorder the terms:
-21 + -1x + 8x = 7x + 7

Combine like terms: -1x + 8x = 7x
-21 + 7x = 7x + 7

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

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

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

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

Solving
-21 = 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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