-129-7x=9x+15

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Solution for -129-7x=9x+15 equation:


Simplifying
-129 + -7x = 9x + 15

Reorder the terms:
-129 + -7x = 15 + 9x

Solving
-129 + -7x = 15 + 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.
-129 + -7x + -9x = 15 + 9x + -9x

Combine like terms: -7x + -9x = -16x
-129 + -16x = 15 + 9x + -9x

Combine like terms: 9x + -9x = 0
-129 + -16x = 15 + 0
-129 + -16x = 15

Add '129' to each side of the equation.
-129 + 129 + -16x = 15 + 129

Combine like terms: -129 + 129 = 0
0 + -16x = 15 + 129
-16x = 15 + 129

Combine like terms: 15 + 129 = 144
-16x = 144

Divide each side by '-16'.
x = -9

Simplifying
x = -9

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