(-3u+7)(3)=

Solution for (-3u+7)(3)= equation:

Simplifying
(-3u + 7)(3) = 0

Reorder the terms:
(7 + -3u)(3) = 0

Reorder the terms for easier multiplication:
3(7 + -3u) = 0
(7 * 3 + -3u * 3) = 0
(21 + -9u) = 0

Solving
21 + -9u = 0

Solving for variable 'u'.

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

Add '-21' to each side of the equation.
21 + -21 + -9u = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -9u = 0 + -21
-9u = 0 + -21

Combine like terms: 0 + -21 = -21
-9u = -21

Divide each side by '-9'.
u = 2.333333333

Simplifying
u = 2.333333333