-y(9+7y)=7(-2-y*y)+5

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Solution for -y(9+7y)=7(-2-y*y)+5 equation: 


Simplifying
-1y(9 + 7y) = 7(-2 + -1y * y) + 5
(9 * -1y + 7y * -1y) = 7(-2 + -1y * y) + 5
(-9y + -7y2) = 7(-2 + -1y * y) + 5

Multiply y * y
-9y + -7y2 = 7(-2 + -1y2) + 5
-9y + -7y2 = (-2 * 7 + -1y2 * 7) + 5
-9y + -7y2 = (-14 + -7y2) + 5

Reorder the terms:
-9y + -7y2 = -14 + 5 + -7y2

Combine like terms: -14 + 5 = -9
-9y + -7y2 = -9 + -7y2

Add '7y2' to each side of the equation.
-9y + -7y2 + 7y2 = -9 + -7y2 + 7y2

Combine like terms: -7y2 + 7y2 = 0
-9y + 0 = -9 + -7y2 + 7y2
-9y = -9 + -7y2 + 7y2

Combine like terms: -7y2 + 7y2 = 0
-9y = -9 + 0
-9y = -9

Solving
-9y = -9

Solving for variable 'y'.

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

Divide each side by '-9'.
y = 1

Simplifying
y = 1

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