u+3=8

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Solution for u+3=8 equation: 


Simplifying
u + 3 = 8

Reorder the terms:
3 + u = 8

Solving
3 + u = 8

Solving for variable 'u'.

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

Add '-3' to each side of the equation.
3 + -3 + u = 8 + -3

Combine like terms: 3 + -3 = 0
0 + u = 8 + -3
u = 8 + -3

Combine like terms: 8 + -3 = 5
u = 5

Simplifying
u = 5

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