255=86-u

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Solution for 255=86-u equation:


Simplifying
255 = 86 + -1u

Solving
255 = 86 + -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.
255 + u = 86 + -1u + u

Combine like terms: -1u + u = 0
255 + u = 86 + 0
255 + u = 86

Add '-255' to each side of the equation.
255 + -255 + u = 86 + -255

Combine like terms: 255 + -255 = 0
0 + u = 86 + -255
u = 86 + -255

Combine like terms: 86 + -255 = -169
u = -169

Simplifying
u = -169

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