0=8u+21

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Solution for 0=8u+21 equation: 


Simplifying
0 = 8u + 21

Reorder the terms:
0 = 21 + 8u

Solving
0 = 21 + 8u

Solving for variable 'u'.

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

Add '-8u' to each side of the equation.
0 + -8u = 21 + 8u + -8u
Remove the zero:
-8u = 21 + 8u + -8u

Combine like terms: 8u + -8u = 0
-8u = 21 + 0
-8u = 21

Divide each side by '-8'.
u = -2.625

Simplifying
u = -2.625

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