3-87=x

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Solution for 3-87=x equation:


Simplifying
3 + -87 = x

Combine like terms: 3 + -87 = -84
-84 = x

Solving
-84 = 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.
-84 + -1x = x + -1x

Combine like terms: x + -1x = 0
-84 + -1x = 0

Add '84' to each side of the equation.
-84 + 84 + -1x = 0 + 84

Combine like terms: -84 + 84 = 0
0 + -1x = 0 + 84
-1x = 0 + 84

Combine like terms: 0 + 84 = 84
-1x = 84

Divide each side by '-1'.
x = -84

Simplifying
x = -84

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