u+4=3

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Solution for u+4=3 equation: 


Simplifying
u + 4 = 3

Reorder the terms:
4 + u = 3

Solving
4 + u = 3

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 + u = 3 + -4

Combine like terms: 4 + -4 = 0
0 + u = 3 + -4
u = 3 + -4

Combine like terms: 3 + -4 = -1
u = -1

Simplifying
u = -1

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