3(u+3)+u=

Solution for 3(u+3)+u= equation:

Simplifying
3(u + 3) + u = 0

Reorder the terms:
3(3 + u) + u = 0
(3 * 3 + u * 3) + u = 0
(9 + 3u) + u = 0

Combine like terms: 3u + u = 4u
9 + 4u = 0

Solving
9 + 4u = 0

Solving for variable 'u'.

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

Add '-9' to each side of the equation.
9 + -9 + 4u = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 4u = 0 + -9
4u = 0 + -9

Combine like terms: 0 + -9 = -9
4u = -9

Divide each side by '4'.
u = -2.25

Simplifying
u = -2.25