-115-9x=8x+21

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Solution for -115-9x=8x+21 equation:


Simplifying
-115 + -9x = 8x + 21

Reorder the terms:
-115 + -9x = 21 + 8x

Solving
-115 + -9x = 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.
-115 + -9x + -8x = 21 + 8x + -8x

Combine like terms: -9x + -8x = -17x
-115 + -17x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
-115 + -17x = 21 + 0
-115 + -17x = 21

Add '115' to each side of the equation.
-115 + 115 + -17x = 21 + 115

Combine like terms: -115 + 115 = 0
0 + -17x = 21 + 115
-17x = 21 + 115

Combine like terms: 21 + 115 = 136
-17x = 136

Divide each side by '-17'.
x = -8

Simplifying
x = -8

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