84=4u

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Solution for 84=4u equation:


Simplifying
84 = 4u

Solving
84 = 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.
84 + -4u = 4u + -4u

Combine like terms: 4u + -4u = 0
84 + -4u = 0

Add '-84' to each side of the equation.
84 + -84 + -4u = 0 + -84

Combine like terms: 84 + -84 = 0
0 + -4u = 0 + -84
-4u = 0 + -84

Combine like terms: 0 + -84 = -84
-4u = -84

Divide each side by '-4'.
u = 21

Simplifying
u = 21

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