3=-4+u

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Solution for 3=-4+u equation:


Simplifying
3 = -4 + u

Solving
3 = -4 + 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 = -4 + u + -1u

Combine like terms: u + -1u = 0
3 + -1u = -4 + 0
3 + -1u = -4

Add '-3' to each side of the equation.
3 + -3 + -1u = -4 + -3

Combine like terms: 3 + -3 = 0
0 + -1u = -4 + -3
-1u = -4 + -3

Combine like terms: -4 + -3 = -7
-1u = -7

Divide each side by '-1'.
u = 7

Simplifying
u = 7

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