100=-4u

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Solution for 100=-4u equation:


Simplifying
100 = -4u

Solving
100 = -4u

Solving for variable 'u'.

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

Add '4u' to each side of the equation.
100 + 4u = -4u + 4u

Combine like terms: -4u + 4u = 0
100 + 4u = 0

Add '-100' to each side of the equation.
100 + -100 + 4u = 0 + -100

Combine like terms: 100 + -100 = 0
0 + 4u = 0 + -100
4u = 0 + -100

Combine like terms: 0 + -100 = -100
4u = -100

Divide each side by '4'.
u = -25

Simplifying
u = -25

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