1=5-u

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Solution for 1=5-u equation: 


Simplifying
1 = 5 + -1u

Solving
1 = 5 + -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.
1 + u = 5 + -1u + u

Combine like terms: -1u + u = 0
1 + u = 5 + 0
1 + u = 5

Add '-1' to each side of the equation.
1 + -1 + u = 5 + -1

Combine like terms: 1 + -1 = 0
0 + u = 5 + -1
u = 5 + -1

Combine like terms: 5 + -1 = 4
u = 4

Simplifying
u = 4

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