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Simplifying 7y + 20 = 4(y + -1) Reorder the terms: 20 + 7y = 4(y + -1) Reorder the terms: 20 + 7y = 4(-1 + y) 20 + 7y = (-1 * 4 + y * 4) 20 + 7y = (-4 + 4y) Solving 20 + 7y = -4 + 4y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-4y' to each side of the equation. 20 + 7y + -4y = -4 + 4y + -4y Combine like terms: 7y + -4y = 3y 20 + 3y = -4 + 4y + -4y Combine like terms: 4y + -4y = 0 20 + 3y = -4 + 0 20 + 3y = -4 Add '-20' to each side of the equation. 20 + -20 + 3y = -4 + -20 Combine like terms: 20 + -20 = 0 0 + 3y = -4 + -20 3y = -4 + -20 Combine like terms: -4 + -20 = -24 3y = -24 Divide each side by '3'. y = -8 Simplifying y = -8
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