4=-8+u

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Solution for 4=-8+u equation:


Simplifying
4 = -8 + u

Solving
4 = -8 + 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.
4 + -1u = -8 + u + -1u

Combine like terms: u + -1u = 0
4 + -1u = -8 + 0
4 + -1u = -8

Add '-4' to each side of the equation.
4 + -4 + -1u = -8 + -4

Combine like terms: 4 + -4 = 0
0 + -1u = -8 + -4
-1u = -8 + -4

Combine like terms: -8 + -4 = -12
-1u = -12

Divide each side by '-1'.
u = 12

Simplifying
u = 12

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