3y^2+7y=3y-4

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Solution for 3y^2+7y=3y-4 equation:


Simplifying
3y2 + 7y = 3y + -4

Reorder the terms:
7y + 3y2 = 3y + -4

Reorder the terms:
7y + 3y2 = -4 + 3y

Solving
7y + 3y2 = -4 + 3y

Solving for variable 'y'.

Reorder the terms:
4 + 7y + -3y + 3y2 = -4 + 3y + 4 + -3y

Combine like terms: 7y + -3y = 4y
4 + 4y + 3y2 = -4 + 3y + 4 + -3y

Reorder the terms:
4 + 4y + 3y2 = -4 + 4 + 3y + -3y

Combine like terms: -4 + 4 = 0
4 + 4y + 3y2 = 0 + 3y + -3y
4 + 4y + 3y2 = 3y + -3y

Combine like terms: 3y + -3y = 0
4 + 4y + 3y2 = 0

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

Divide each side by '3'.
1.333333333 + 1.333333333y + y2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + 1.333333333y + -1.333333333 + y2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + 1.333333333y + y2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + 1.333333333y + y2 = 0 + -1.333333333
1.333333333y + y2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
1.333333333y + y2 = -1.333333333

The y term is 1.333333333y.  Take half its coefficient (0.6666666665).
Square it (0.4444444442) and add it to both sides.

Add '0.4444444442' to each side of the equation.
1.333333333y + 0.4444444442 + y2 = -1.333333333 + 0.4444444442

Reorder the terms:
0.4444444442 + 1.333333333y + y2 = -1.333333333 + 0.4444444442

Combine like terms: -1.333333333 + 0.4444444442 = -0.8888888888
0.4444444442 + 1.333333333y + y2 = -0.8888888888

Factor a perfect square on the left side:
(y + 0.6666666665)(y + 0.6666666665) = -0.8888888888

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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