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Simplifying 4x + 9y + 20 = 0 Reorder the terms: 20 + 4x + 9y = 0 Solving 20 + 4x + 9y = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + 4x + -20 + 9y = 0 + -20 Reorder the terms: 20 + -20 + 4x + 9y = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 4x + 9y = 0 + -20 4x + 9y = 0 + -20 Combine like terms: 0 + -20 = -20 4x + 9y = -20 Add '-9y' to each side of the equation. 4x + 9y + -9y = -20 + -9y Combine like terms: 9y + -9y = 0 4x + 0 = -20 + -9y 4x = -20 + -9y Divide each side by '4'. x = -5 + -2.25y Simplifying x = -5 + -2.25y
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