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Simplifying -7y(2y + -3x + 9) = 0 Reorder the terms: -7y(9 + -3x + 2y) = 0 (9 * -7y + -3x * -7y + 2y * -7y) = 0 Reorder the terms: (21xy + -63y + -14y2) = 0 (21xy + -63y + -14y2) = 0 Solving 21xy + -63y + -14y2 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '63y' to each side of the equation. 21xy + -63y + 63y + -14y2 = 0 + 63y Combine like terms: -63y + 63y = 0 21xy + 0 + -14y2 = 0 + 63y 21xy + -14y2 = 0 + 63y Remove the zero: 21xy + -14y2 = 63y Add '14y2' to each side of the equation. 21xy + -14y2 + 14y2 = 63y + 14y2 Combine like terms: -14y2 + 14y2 = 0 21xy + 0 = 63y + 14y2 21xy = 63y + 14y2 Divide each side by '21y'. x = 3 + 0.6666666667y Simplifying x = 3 + 0.6666666667y
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