=-4y(2x+7y)

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Solution for =-4y(2x+7y) equation: 


Simplifying
0 = -4y(2x + 7y)
0 = (2x * -4y + 7y * -4y)
0 = (-8xy + -28y2)

Solving
0 = -8xy + -28y2

Solving for variable 'x'.

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

Add '8xy' to each side of the equation.
0 + 8xy = -8xy + 8xy + -28y2
Remove the zero:
8xy = -8xy + 8xy + -28y2

Combine like terms: -8xy + 8xy = 0
8xy = 0 + -28y2
8xy = -28y2

Divide each side by '8y'.
x = -3.5y

Simplifying
x = -3.5y

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