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Simplifying 5y + 7 = -2y + -21 Reorder the terms: 7 + 5y = -2y + -21 Reorder the terms: 7 + 5y = -21 + -2y Solving 7 + 5y = -21 + -2y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '2y' to each side of the equation. 7 + 5y + 2y = -21 + -2y + 2y Combine like terms: 5y + 2y = 7y 7 + 7y = -21 + -2y + 2y Combine like terms: -2y + 2y = 0 7 + 7y = -21 + 0 7 + 7y = -21 Add '-7' to each side of the equation. 7 + -7 + 7y = -21 + -7 Combine like terms: 7 + -7 = 0 0 + 7y = -21 + -7 7y = -21 + -7 Combine like terms: -21 + -7 = -28 7y = -28 Divide each side by '7'. y = -4 Simplifying y = -4
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