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Simplifying 3y + -9 = 18y + 81 Reorder the terms: -9 + 3y = 18y + 81 Reorder the terms: -9 + 3y = 81 + 18y Solving -9 + 3y = 81 + 18y Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-18y' to each side of the equation. -9 + 3y + -18y = 81 + 18y + -18y Combine like terms: 3y + -18y = -15y -9 + -15y = 81 + 18y + -18y Combine like terms: 18y + -18y = 0 -9 + -15y = 81 + 0 -9 + -15y = 81 Add '9' to each side of the equation. -9 + 9 + -15y = 81 + 9 Combine like terms: -9 + 9 = 0 0 + -15y = 81 + 9 -15y = 81 + 9 Combine like terms: 81 + 9 = 90 -15y = 90 Divide each side by '-15'. y = -6 Simplifying y = -6
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