-87-10x=8x+21

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Solution for -87-10x=8x+21 equation:


Simplifying
-87 + -10x = 8x + 21

Reorder the terms:
-87 + -10x = 21 + 8x

Solving
-87 + -10x = 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.
-87 + -10x + -8x = 21 + 8x + -8x

Combine like terms: -10x + -8x = -18x
-87 + -18x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
-87 + -18x = 21 + 0
-87 + -18x = 21

Add '87' to each side of the equation.
-87 + 87 + -18x = 21 + 87

Combine like terms: -87 + 87 = 0
0 + -18x = 21 + 87
-18x = 21 + 87

Combine like terms: 21 + 87 = 108
-18x = 108

Divide each side by '-18'.
x = -6

Simplifying
x = -6

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