-20=28-3u

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Solution for -20=28-3u equation:


Simplifying
-20 = 28 + -3u

Solving
-20 = 28 + -3u

Solving for variable 'u'.

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

Add '3u' to each side of the equation.
-20 + 3u = 28 + -3u + 3u

Combine like terms: -3u + 3u = 0
-20 + 3u = 28 + 0
-20 + 3u = 28

Add '20' to each side of the equation.
-20 + 20 + 3u = 28 + 20

Combine like terms: -20 + 20 = 0
0 + 3u = 28 + 20
3u = 28 + 20

Combine like terms: 28 + 20 = 48
3u = 48

Divide each side by '3'.
u = 16

Simplifying
u = 16

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