87=u-51

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Solution for 87=u-51 equation:


Simplifying
87 = u + -51

Reorder the terms:
87 = -51 + u

Solving
87 = -51 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
87 + -1u = -51 + u + -1u

Combine like terms: u + -1u = 0
87 + -1u = -51 + 0
87 + -1u = -51

Add '-87' to each side of the equation.
87 + -87 + -1u = -51 + -87

Combine like terms: 87 + -87 = 0
0 + -1u = -51 + -87
-1u = -51 + -87

Combine like terms: -51 + -87 = -138
-1u = -138

Divide each side by '-1'.
u = 138

Simplifying
u = 138

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