(5u-3)(9-u)=0

Solution for (5u-3)(9-u)=0 equation:

Simplifying
(5u + -3)(9 + -1u) = 0

Reorder the terms:
(-3 + 5u)(9 + -1u) = 0

Multiply (-3 + 5u) * (9 + -1u)
(-3(9 + -1u) + 5u * (9 + -1u)) = 0
((9 * -3 + -1u * -3) + 5u * (9 + -1u)) = 0
((-27 + 3u) + 5u * (9 + -1u)) = 0
(-27 + 3u + (9 * 5u + -1u * 5u)) = 0
(-27 + 3u + (45u + -5u2)) = 0

Combine like terms: 3u + 45u = 48u
(-27 + 48u + -5u2) = 0

Solving
-27 + 48u + -5u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-9 + u)(3 + -5u) = 0

Subproblem 1
Set the factor '(-9 + u)' equal to zero and attempt to solve:

Simplifying
-9 + u = 0

Solving
-9 + u = 0

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

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

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

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

Simplifying
u = 9
Subproblem 2
Set the factor '(3 + -5u)' equal to zero and attempt to solve:

Simplifying
3 + -5u = 0

Solving
3 + -5u = 0

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

Add '-3' to each side of the equation.
3 + -3 + -5u = 0 + -3

Combine like terms: 3 + -3 = 0
0 + -5u = 0 + -3
-5u = 0 + -3

Combine like terms: 0 + -3 = -3
-5u = -3

Divide each side by '-5'.
u = 0.6

Simplifying
u = 0.6
Solution
u = {9, 0.6}