(7+3y)*(y+2)=3*(y^2+15)

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Solution for (7+3y)*(y+2)=3*(y^2+15) equation:


Simplifying
(7 + 3y)(y + 2) = 3(y2 + 15)

Reorder the terms:
(7 + 3y)(2 + y) = 3(y2 + 15)

Multiply (7 + 3y) * (2 + y)
(7(2 + y) + 3y * (2 + y)) = 3(y2 + 15)
((2 * 7 + y * 7) + 3y * (2 + y)) = 3(y2 + 15)
((14 + 7y) + 3y * (2 + y)) = 3(y2 + 15)
(14 + 7y + (2 * 3y + y * 3y)) = 3(y2 + 15)
(14 + 7y + (6y + 3y2)) = 3(y2 + 15)

Combine like terms: 7y + 6y = 13y
(14 + 13y + 3y2) = 3(y2 + 15)

Reorder the terms:
14 + 13y + 3y2 = 3(15 + y2)
14 + 13y + 3y2 = (15 * 3 + y2 * 3)
14 + 13y + 3y2 = (45 + 3y2)

Add '-3y2' to each side of the equation.
14 + 13y + 3y2 + -3y2 = 45 + 3y2 + -3y2

Combine like terms: 3y2 + -3y2 = 0
14 + 13y + 0 = 45 + 3y2 + -3y2
14 + 13y = 45 + 3y2 + -3y2

Combine like terms: 3y2 + -3y2 = 0
14 + 13y = 45 + 0
14 + 13y = 45

Solving
14 + 13y = 45

Solving for variable 'y'.

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

Add '-14' to each side of the equation.
14 + -14 + 13y = 45 + -14

Combine like terms: 14 + -14 = 0
0 + 13y = 45 + -14
13y = 45 + -14

Combine like terms: 45 + -14 = 31
13y = 31

Divide each side by '13'.
y = 2.384615385

Simplifying
y = 2.384615385

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