u-3=-9

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Solution for u-3=-9 equation: 


Simplifying
u + -3 = -9

Reorder the terms:
-3 + u = -9

Solving
-3 + u = -9

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 = -9 + 3

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

Combine like terms: -9 + 3 = -6
u = -6

Simplifying
u = -6

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