-18=-.86u

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Solution for -18=-.86u equation:


Simplifying
-18 = -0.86u

Solving
-18 = -0.86u

Solving for variable 'u'.

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

Add '0.86u' to each side of the equation.
-18 + 0.86u = -0.86u + 0.86u

Combine like terms: -0.86u + 0.86u = 0.00
-18 + 0.86u = 0.00

Add '18' to each side of the equation.
-18 + 18 + 0.86u = 0.00 + 18

Combine like terms: -18 + 18 = 0
0 + 0.86u = 0.00 + 18
0.86u = 0.00 + 18

Combine like terms: 0.00 + 18 = 18
0.86u = 18

Divide each side by '0.86'.
u = 20.93023256

Simplifying
u = 20.93023256

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