(3y-7)(3+y)=0

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Solution for (3y-7)(3+y)=0 equation:


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

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

Multiply (-7 + 3y) * (3 + y)
(-7(3 + y) + 3y * (3 + y)) = 0
((3 * -7 + y * -7) + 3y * (3 + y)) = 0
((-21 + -7y) + 3y * (3 + y)) = 0
(-21 + -7y + (3 * 3y + y * 3y)) = 0
(-21 + -7y + (9y + 3y2)) = 0

Combine like terms: -7y + 9y = 2y
(-21 + 2y + 3y2) = 0

Solving
-21 + 2y + 3y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(-3 + -1y)(7 + -3y) = 0

Subproblem 1

Set the factor '(-3 + -1y)' equal to zero and attempt to solve: Simplifying -3 + -1y = 0 Solving -3 + -1y = 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 + -1y = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -1y = 0 + 3 -1y = 0 + 3 Combine like terms: 0 + 3 = 3 -1y = 3 Divide each side by '-1'. y = -3 Simplifying y = -3

Subproblem 2

Set the factor '(7 + -3y)' equal to zero and attempt to solve: Simplifying 7 + -3y = 0 Solving 7 + -3y = 0 Move all terms containing y to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -3y = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -3y = 0 + -7 -3y = 0 + -7 Combine like terms: 0 + -7 = -7 -3y = -7 Divide each side by '-3'. y = 2.333333333 Simplifying y = 2.333333333

Solution

y = {-3, 2.333333333}

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