-4x-8=9x+31

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Solution for -4x-8=9x+31 equation:


Simplifying
-4x + -8 = 9x + 31

Reorder the terms:
-8 + -4x = 9x + 31

Reorder the terms:
-8 + -4x = 31 + 9x

Solving
-8 + -4x = 31 + 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.
-8 + -4x + -9x = 31 + 9x + -9x

Combine like terms: -4x + -9x = -13x
-8 + -13x = 31 + 9x + -9x

Combine like terms: 9x + -9x = 0
-8 + -13x = 31 + 0
-8 + -13x = 31

Add '8' to each side of the equation.
-8 + 8 + -13x = 31 + 8

Combine like terms: -8 + 8 = 0
0 + -13x = 31 + 8
-13x = 31 + 8

Combine like terms: 31 + 8 = 39
-13x = 39

Divide each side by '-13'.
x = -3

Simplifying
x = -3

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