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

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

Simplifying
(4u + -3)(5 + -1u) = 0

Reorder the terms:
(-3 + 4u)(5 + -1u) = 0

Multiply (-3 + 4u) * (5 + -1u)
(-3(5 + -1u) + 4u * (5 + -1u)) = 0
((5 * -3 + -1u * -3) + 4u * (5 + -1u)) = 0
((-15 + 3u) + 4u * (5 + -1u)) = 0
(-15 + 3u + (5 * 4u + -1u * 4u)) = 0
(-15 + 3u + (20u + -4u2)) = 0

Combine like terms: 3u + 20u = 23u
(-15 + 23u + -4u2) = 0

Solving
-15 + 23u + -4u2 = 0

Solving for variable 'u'.

Factor a trinomial.
(-5 + u)(3 + -4u) = 0

Subproblem 1
Set the factor '(-5 + u)' equal to zero and attempt to solve:

Simplifying
-5 + u = 0

Solving
-5 + u = 0

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

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

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

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

Simplifying
u = 5
Subproblem 2
Set the factor '(3 + -4u)' equal to zero and attempt to solve:

Simplifying
3 + -4u = 0

Solving
3 + -4u = 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 + -4u = 0 + -3

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

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

Divide each side by '-4'.
u = 0.75

Simplifying
u = 0.75
Solution
u = {5, 0.75}