220=61-u

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Solution for 220=61-u equation:


Simplifying
220 = 61 + -1u

Solving
220 = 61 + -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.
220 + u = 61 + -1u + u

Combine like terms: -1u + u = 0
220 + u = 61 + 0
220 + u = 61

Add '-220' to each side of the equation.
220 + -220 + u = 61 + -220

Combine like terms: 220 + -220 = 0
0 + u = 61 + -220
u = 61 + -220

Combine like terms: 61 + -220 = -159
u = -159

Simplifying
u = -159

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