(3u+5)(3+4)=0

Solution for (3u+5)(3+4)=0 equation:

Simplifying
(3u + 5)(3 + 4) = 0

Reorder the terms:
(5 + 3u)(3 + 4) = 0

Combine like terms: 3 + 4 = 7
(5 + 3u)(7) = 0

Reorder the terms for easier multiplication:
7(5 + 3u) = 0
(5 * 7 + 3u * 7) = 0
(35 + 21u) = 0

Solving
35 + 21u = 0

Solving for variable 'u'.

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

Add '-35' to each side of the equation.
35 + -35 + 21u = 0 + -35

Combine like terms: 35 + -35 = 0
0 + 21u = 0 + -35
21u = 0 + -35

Combine like terms: 0 + -35 = -35
21u = -35

Divide each side by '21'.
u = -1.666666667

Simplifying
u = -1.666666667