39+2y=15y(-2y)

Solution for 39+2y=15y(-2y) equation:

Simplifying
39 + 2y = 15y(-2y)

Remove parenthesis around (-2y)
39 + 2y = 15y * -2y

Reorder the terms for easier multiplication:
39 + 2y = 15 * -2y * y

Multiply 15 * -2
39 + 2y = -30y * y

Multiply y * y
39 + 2y = -30y2

Solving
39 + 2y = -30y2

Solving for variable 'y'.

Combine like terms: -30y2 + 30y2 = 0
39 + 2y + 30y2 = 0

Begin completing the square.  Divide all terms by
30 the coefficient of the squared term: 

Divide each side by '30'.
1.3 + 0.06666666667y + y2 = 0

Move the constant term to the right:

Add '-1.3' to each side of the equation.
1.3 + 0.06666666667y + -1.3 + y2 = 0 + -1.3

Reorder the terms:
1.3 + -1.3 + 0.06666666667y + y2 = 0 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + 0.06666666667y + y2 = 0 + -1.3
0.06666666667y + y2 = 0 + -1.3

Combine like terms: 0 + -1.3 = -1.3
0.06666666667y + y2 = -1.3

The y term is 0.06666666667y.  Take half its coefficient (0.03333333334).
Square it (0.001111111112) and add it to both sides.

Add '0.001111111112' to each side of the equation.
0.06666666667y + 0.001111111112 + y2 = -1.3 + 0.001111111112

Reorder the terms:
0.001111111112 + 0.06666666667y + y2 = -1.3 + 0.001111111112

Combine like terms: -1.3 + 0.001111111112 = -1.298888888888
0.001111111112 + 0.06666666667y + y2 = -1.298888888888

Factor a perfect square on the left side:
(y + 0.03333333334)(y + 0.03333333334) = -1.298888888888

Can't calculate square root of the right side.

The solution to this equation could not be determined.