28-3u=u

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Solution for 28-3u=u equation:


Simplifying
28 + -3u = u

Solving
28 + -3u = u

Solving for variable 'u'.

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

Add '-1u' to each side of the equation.
28 + -3u + -1u = u + -1u

Combine like terms: -3u + -1u = -4u
28 + -4u = u + -1u

Combine like terms: u + -1u = 0
28 + -4u = 0

Add '-28' to each side of the equation.
28 + -28 + -4u = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -4u = 0 + -28
-4u = 0 + -28

Combine like terms: 0 + -28 = -28
-4u = -28

Divide each side by '-4'.
u = 7

Simplifying
u = 7

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