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Simplifying -1(8y + 4) + -1(-7y + -9) = 4 Reorder the terms: -1(4 + 8y) + -1(-7y + -9) = 4 (4 * -1 + 8y * -1) + -1(-7y + -9) = 4 (-4 + -8y) + -1(-7y + -9) = 4 Reorder the terms: -4 + -8y + -1(-9 + -7y) = 4 -4 + -8y + (-9 * -1 + -7y * -1) = 4 -4 + -8y + (9 + 7y) = 4 Reorder the terms: -4 + 9 + -8y + 7y = 4 Combine like terms: -4 + 9 = 5 5 + -8y + 7y = 4 Combine like terms: -8y + 7y = -1y 5 + -1y = 4 Solving 5 + -1y = 4 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1y = 4 + -5 Combine like terms: 5 + -5 = 0 0 + -1y = 4 + -5 -1y = 4 + -5 Combine like terms: 4 + -5 = -1 -1y = -1 Divide each side by '-1'. y = 1 Simplifying y = 1
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