-87=-15-9x

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Solution for -87=-15-9x equation:


Simplifying
-87 = -15 + -9x

Solving
-87 = -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.
-87 + 9x = -15 + -9x + 9x

Combine like terms: -9x + 9x = 0
-87 + 9x = -15 + 0
-87 + 9x = -15

Add '87' to each side of the equation.
-87 + 87 + 9x = -15 + 87

Combine like terms: -87 + 87 = 0
0 + 9x = -15 + 87
9x = -15 + 87

Combine like terms: -15 + 87 = 72
9x = 72

Divide each side by '9'.
x = 8

Simplifying
x = 8

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