81=234-u

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Solution for 81=234-u equation:


Simplifying
81 = 234 + -1u

Solving
81 = 234 + -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.
81 + u = 234 + -1u + u

Combine like terms: -1u + u = 0
81 + u = 234 + 0
81 + u = 234

Add '-81' to each side of the equation.
81 + -81 + u = 234 + -81

Combine like terms: 81 + -81 = 0
0 + u = 234 + -81
u = 234 + -81

Combine like terms: 234 + -81 = 153
u = 153

Simplifying
u = 153

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