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Simplifying (2x + -5) + x = 139 Reorder the terms: (-5 + 2x) + x = 139 Remove parenthesis around (-5 + 2x) -5 + 2x + x = 139 Combine like terms: 2x + x = 3x -5 + 3x = 139 Solving -5 + 3x = 139 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + 3x = 139 + 5 Combine like terms: -5 + 5 = 0 0 + 3x = 139 + 5 3x = 139 + 5 Combine like terms: 139 + 5 = 144 3x = 144 Divide each side by '3'. x = 48 Simplifying x = 48
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