20=3u+u

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Solution for 20=3u+u equation:


Simplifying
20 = 3u + u

Combine like terms: 3u + u = 4u
20 = 4u

Solving
20 = 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.
20 + -4u = 4u + -4u

Combine like terms: 4u + -4u = 0
20 + -4u = 0

Add '-20' to each side of the equation.
20 + -20 + -4u = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -4u = 0 + -20
-4u = 0 + -20

Combine like terms: 0 + -20 = -20
-4u = -20

Divide each side by '-4'.
u = 5

Simplifying
u = 5

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