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Simplifying (y + -4) + -1(y + 4) = 7y Reorder the terms: (-4 + y) + -1(y + 4) = 7y Remove parenthesis around (-4 + y) -4 + y + -1(y + 4) = 7y Reorder the terms: -4 + y + -1(4 + y) = 7y -4 + y + (4 * -1 + y * -1) = 7y -4 + y + (-4 + -1y) = 7y Reorder the terms: -4 + -4 + y + -1y = 7y Combine like terms: -4 + -4 = -8 -8 + y + -1y = 7y Combine like terms: y + -1y = 0 -8 + 0 = 7y -8 = 7y Solving -8 = 7y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-7y' to each side of the equation. -8 + -7y = 7y + -7y Combine like terms: 7y + -7y = 0 -8 + -7y = 0 Add '8' to each side of the equation. -8 + 8 + -7y = 0 + 8 Combine like terms: -8 + 8 = 0 0 + -7y = 0 + 8 -7y = 0 + 8 Combine like terms: 0 + 8 = 8 -7y = 8 Divide each side by '-7'. y = -1.142857143 Simplifying y = -1.142857143
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