-87=x+x

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Solution for -87=x+x equation:


Simplifying
-87 = x + x

Combine like terms: x + x = 2x
-87 = 2x

Solving
-87 = 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
-87 + -2x = 2x + -2x

Combine like terms: 2x + -2x = 0
-87 + -2x = 0

Add '87' to each side of the equation.
-87 + 87 + -2x = 0 + 87

Combine like terms: -87 + 87 = 0
0 + -2x = 0 + 87
-2x = 0 + 87

Combine like terms: 0 + 87 = 87
-2x = 87

Divide each side by '-2'.
x = -43.5

Simplifying
x = -43.5

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