5y(3y+4)=9y+12

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Solution for 5y(3y+4)=9y+12 equation:


Simplifying
5y(3y + 4) = 9y + 12

Reorder the terms:
5y(4 + 3y) = 9y + 12
(4 * 5y + 3y * 5y) = 9y + 12
(20y + 15y2) = 9y + 12

Reorder the terms:
20y + 15y2 = 12 + 9y

Solving
20y + 15y2 = 12 + 9y

Solving for variable 'y'.

Reorder the terms:
-12 + 20y + -9y + 15y2 = 12 + 9y + -12 + -9y

Combine like terms: 20y + -9y = 11y
-12 + 11y + 15y2 = 12 + 9y + -12 + -9y

Reorder the terms:
-12 + 11y + 15y2 = 12 + -12 + 9y + -9y

Combine like terms: 12 + -12 = 0
-12 + 11y + 15y2 = 0 + 9y + -9y
-12 + 11y + 15y2 = 9y + -9y

Combine like terms: 9y + -9y = 0
-12 + 11y + 15y2 = 0

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

Subproblem 1

Set the factor '(-4 + -3y)' equal to zero and attempt to solve: Simplifying -4 + -3y = 0 Solving -4 + -3y = 0 Move all terms containing y to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + -3y = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -3y = 0 + 4 -3y = 0 + 4 Combine like terms: 0 + 4 = 4 -3y = 4 Divide each side by '-3'. y = -1.333333333 Simplifying y = -1.333333333

Subproblem 2

Set the factor '(3 + -5y)' equal to zero and attempt to solve: Simplifying 3 + -5y = 0 Solving 3 + -5y = 0 Move all terms containing y to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -5y = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -5y = 0 + -3 -5y = 0 + -3 Combine like terms: 0 + -3 = -3 -5y = -3 Divide each side by '-5'. y = 0.6 Simplifying y = 0.6

Solution

y = {-1.333333333, 0.6}

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