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Simplifying 3x + 15y + -81 = 0 Reorder the terms: -81 + 3x + 15y = 0 Solving -81 + 3x + 15y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '81' to each side of the equation. -81 + 3x + 81 + 15y = 0 + 81 Reorder the terms: -81 + 81 + 3x + 15y = 0 + 81 Combine like terms: -81 + 81 = 0 0 + 3x + 15y = 0 + 81 3x + 15y = 0 + 81 Combine like terms: 0 + 81 = 81 3x + 15y = 81 Add '-15y' to each side of the equation. 3x + 15y + -15y = 81 + -15y Combine like terms: 15y + -15y = 0 3x + 0 = 81 + -15y 3x = 81 + -15y Divide each side by '3'. x = 27 + -5y Simplifying x = 27 + -5y
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