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Simplifying 40x + -20x + -3 = 77 Reorder the terms: -3 + 40x + -20x = 77 Combine like terms: 40x + -20x = 20x -3 + 20x = 77 Solving -3 + 20x = 77 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + 20x = 77 + 3 Combine like terms: -3 + 3 = 0 0 + 20x = 77 + 3 20x = 77 + 3 Combine like terms: 77 + 3 = 80 20x = 80 Divide each side by '20'. x = 4 Simplifying x = 4
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