89=164-u

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Solution for 89=164-u equation:


Simplifying
89 = 164 + -1u

Solving
89 = 164 + -1u

Solving for variable 'u'.

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

Add 'u' to each side of the equation.
89 + u = 164 + -1u + u

Combine like terms: -1u + u = 0
89 + u = 164 + 0
89 + u = 164

Add '-89' to each side of the equation.
89 + -89 + u = 164 + -89

Combine like terms: 89 + -89 = 0
0 + u = 164 + -89
u = 164 + -89

Combine like terms: 164 + -89 = 75
u = 75

Simplifying
u = 75

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