5(u+6)-8u=21

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Solution for 5(u+6)-8u=21 equation:


Simplifying
5(u + 6) + -8u = 21

Reorder the terms:
5(6 + u) + -8u = 21
(6 * 5 + u * 5) + -8u = 21
(30 + 5u) + -8u = 21

Combine like terms: 5u + -8u = -3u
30 + -3u = 21

Solving
30 + -3u = 21

Solving for variable 'u'.

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

Add '-30' to each side of the equation.
30 + -30 + -3u = 21 + -30

Combine like terms: 30 + -30 = 0
0 + -3u = 21 + -30
-3u = 21 + -30

Combine like terms: 21 + -30 = -9
-3u = -9

Divide each side by '-3'.
u = 3

Simplifying
u = 3

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