9+u=-3

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Solution for 9+u=-3 equation: 


Simplifying
9 + u = -3

Solving
9 + u = -3

Solving for variable 'u'.

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

Add '-9' to each side of the equation.
9 + -9 + u = -3 + -9

Combine like terms: 9 + -9 = 0
0 + u = -3 + -9
u = -3 + -9

Combine like terms: -3 + -9 = -12
u = -12

Simplifying
u = -12

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