91-u=257

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Solution for 91-u=257 equation: 


Simplifying
91 + -1u = 257

Solving
91 + -1u = 257

Solving for variable 'u'.

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

Add '-91' to each side of the equation.
91 + -91 + -1u = 257 + -91

Combine like terms: 91 + -91 = 0
0 + -1u = 257 + -91
-1u = 257 + -91

Combine like terms: 257 + -91 = 166
-1u = 166

Divide each side by '-1'.
u = -166

Simplifying
u = -166

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