-3+u=-20

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Solution for -3+u=-20 equation: 


Simplifying
-3 + u = -20

Solving
-3 + u = -20

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 = -20 + 3

Combine like terms: -3 + 3 = 0
0 + u = -20 + 3
u = -20 + 3

Combine like terms: -20 + 3 = -17
u = -17

Simplifying
u = -17

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