7-8x=8x+21

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


Simplifying
7 + -8x = 8x + 21

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

Solving
7 + -8x = 21 + 8x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-8x' to each side of the equation.
7 + -8x + -8x = 21 + 8x + -8x

Combine like terms: -8x + -8x = -16x
7 + -16x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
7 + -16x = 21 + 0
7 + -16x = 21

Add '-7' to each side of the equation.
7 + -7 + -16x = 21 + -7

Combine like terms: 7 + -7 = 0
0 + -16x = 21 + -7
-16x = 21 + -7

Combine like terms: 21 + -7 = 14
-16x = 14

Divide each side by '-16'.
x = -0.875

Simplifying
x = -0.875

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