87=x-15

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Solution for 87=x-15 equation:


Simplifying
87 = x + -15

Reorder the terms:
87 = -15 + x

Solving
87 = -15 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
87 + -1x = -15 + x + -1x

Combine like terms: x + -1x = 0
87 + -1x = -15 + 0
87 + -1x = -15

Add '-87' to each side of the equation.
87 + -87 + -1x = -15 + -87

Combine like terms: 87 + -87 = 0
0 + -1x = -15 + -87
-1x = -15 + -87

Combine like terms: -15 + -87 = -102
-1x = -102

Divide each side by '-1'.
x = 102

Simplifying
x = 102

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