-3=-6+u

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Solution for -3=-6+u equation: 


Simplifying
-3 = -6 + u

Solving
-3 = -6 + u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
-3 + -1u = -6 + u + -1u

Combine like terms: u + -1u = 0
-3 + -1u = -6 + 0
-3 + -1u = -6

Add '3' to each side of the equation.
-3 + 3 + -1u = -6 + 3

Combine like terms: -3 + 3 = 0
0 + -1u = -6 + 3
-1u = -6 + 3

Combine like terms: -6 + 3 = -3
-1u = -3

Divide each side by '-1'.
u = 3

Simplifying
u = 3

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