-31-8x=9x+20

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Solution for -31-8x=9x+20 equation:


Simplifying
-31 + -8x = 9x + 20

Reorder the terms:
-31 + -8x = 20 + 9x

Solving
-31 + -8x = 20 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
-31 + -8x + -9x = 20 + 9x + -9x

Combine like terms: -8x + -9x = -17x
-31 + -17x = 20 + 9x + -9x

Combine like terms: 9x + -9x = 0
-31 + -17x = 20 + 0
-31 + -17x = 20

Add '31' to each side of the equation.
-31 + 31 + -17x = 20 + 31

Combine like terms: -31 + 31 = 0
0 + -17x = 20 + 31
-17x = 20 + 31

Combine like terms: 20 + 31 = 51
-17x = 51

Divide each side by '-17'.
x = -3

Simplifying
x = -3

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