285=46-u

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Solution for 285=46-u equation:


Simplifying
285 = 46 + -1u

Solving
285 = 46 + -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.
285 + u = 46 + -1u + u

Combine like terms: -1u + u = 0
285 + u = 46 + 0
285 + u = 46

Add '-285' to each side of the equation.
285 + -285 + u = 46 + -285

Combine like terms: 285 + -285 = 0
0 + u = 46 + -285
u = 46 + -285

Combine like terms: 46 + -285 = -239
u = -239

Simplifying
u = -239

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