4-u=5

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Solution for 4-u=5 equation: 


Simplifying
4 + -1u = 5

Solving
4 + -1u = 5

Solving for variable 'u'.

Move all terms containing u to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + -1u = 5 + -4

Combine like terms: 4 + -4 = 0
0 + -1u = 5 + -4
-1u = 5 + -4

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

Divide each side by '-1'.
u = -1

Simplifying
u = -1

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