-x+87=91+3x

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Solution for -x+87=91+3x equation:


Simplifying
-1x + 87 = 91 + 3x

Reorder the terms:
87 + -1x = 91 + 3x

Solving
87 + -1x = 91 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
87 + -1x + -3x = 91 + 3x + -3x

Combine like terms: -1x + -3x = -4x
87 + -4x = 91 + 3x + -3x

Combine like terms: 3x + -3x = 0
87 + -4x = 91 + 0
87 + -4x = 91

Add '-87' to each side of the equation.
87 + -87 + -4x = 91 + -87

Combine like terms: 87 + -87 = 0
0 + -4x = 91 + -87
-4x = 91 + -87

Combine like terms: 91 + -87 = 4
-4x = 4

Divide each side by '-4'.
x = -1

Simplifying
x = -1

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