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Simplifying (Y + 9)(y + -10) = -70 Reorder the terms: (9 + Y)(y + -10) = -70 Reorder the terms: (9 + Y)(-10 + y) = -70 Multiply (9 + Y) * (-10 + y) (9(-10 + y) + Y(-10 + y)) = -70 ((-10 * 9 + y * 9) + Y(-10 + y)) = -70 ((-90 + 9y) + Y(-10 + y)) = -70 (-90 + 9y + (-10 * Y + y * Y)) = -70 (-90 + 9y + (-10Y + yY)) = -70 Reorder the terms: (-90 + -10Y + 9y + yY) = -70 (-90 + -10Y + 9y + yY) = -70 Solving -90 + -10Y + 9y + yY = -70 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Add '90' to each side of the equation. -90 + -10Y + 9y + 90 + yY = -70 + 90 Reorder the terms: -90 + 90 + -10Y + 9y + yY = -70 + 90 Combine like terms: -90 + 90 = 0 0 + -10Y + 9y + yY = -70 + 90 -10Y + 9y + yY = -70 + 90 Combine like terms: -70 + 90 = 20 -10Y + 9y + yY = 20 Add '-9y' to each side of the equation. -10Y + 9y + -9y + yY = 20 + -9y Combine like terms: 9y + -9y = 0 -10Y + 0 + yY = 20 + -9y -10Y + yY = 20 + -9y Reorder the terms: -20 + -10Y + 9y + yY = 20 + -9y + -20 + 9y Reorder the terms: -20 + -10Y + 9y + yY = 20 + -20 + -9y + 9y Combine like terms: 20 + -20 = 0 -20 + -10Y + 9y + yY = 0 + -9y + 9y -20 + -10Y + 9y + yY = -9y + 9y Combine like terms: -9y + 9y = 0 -20 + -10Y + 9y + yY = 0 The solution to this equation could not be determined.
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