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Simplifying x + -30 + 2x + 10 = 130 Reorder the terms: -30 + 10 + x + 2x = 130 Combine like terms: -30 + 10 = -20 -20 + x + 2x = 130 Combine like terms: x + 2x = 3x -20 + 3x = 130 Solving -20 + 3x = 130 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 + 20 + 3x = 130 + 20 Combine like terms: -20 + 20 = 0 0 + 3x = 130 + 20 3x = 130 + 20 Combine like terms: 130 + 20 = 150 3x = 150 Divide each side by '3'. x = 50 Simplifying x = 50
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