(4y+9)(2y+7)=0

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Solution for (4y+9)(2y+7)=0 equation: 


Simplifying
(4y + 9)(2y + 7) = 0

Reorder the terms:
(9 + 4y)(2y + 7) = 0

Reorder the terms:
(9 + 4y)(7 + 2y) = 0

Multiply (9 + 4y) * (7 + 2y)
(9(7 + 2y) + 4y * (7 + 2y)) = 0
((7 * 9 + 2y * 9) + 4y * (7 + 2y)) = 0
((63 + 18y) + 4y * (7 + 2y)) = 0
(63 + 18y + (7 * 4y + 2y * 4y)) = 0
(63 + 18y + (28y + 8y2)) = 0

Combine like terms: 18y + 28y = 46y
(63 + 46y + 8y2) = 0

Solving
63 + 46y + 8y2 = 0

Solving for variable 'y'.

Factor a trinomial.
(7 + 2y)(9 + 4y) = 0


Subproblem 1
Set the factor '(7 + 2y)' equal to zero and attempt to solve:

Simplifying
7 + 2y = 0

Solving
7 + 2y = 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 + 2y = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 2y = 0 + -7
2y = 0 + -7

Combine like terms: 0 + -7 = -7
2y = -7

Divide each side by '2'.
y = -3.5

Simplifying
y = -3.5

Subproblem 2
Set the factor '(9 + 4y)' equal to zero and attempt to solve:

Simplifying
9 + 4y = 0

Solving
9 + 4y = 0

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

Add '-9' to each side of the equation.
9 + -9 + 4y = 0 + -9

Combine like terms: 9 + -9 = 0
0 + 4y = 0 + -9
4y = 0 + -9

Combine like terms: 0 + -9 = -9
4y = -9

Divide each side by '4'.
y = -2.25

Simplifying
y = -2.25
Solution
y = {-3.5, -2.25}

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