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Simplifying (2x + -5) + (2x + 1) + 72 = 180 Reorder the terms: (-5 + 2x) + (2x + 1) + 72 = 180 Remove parenthesis around (-5 + 2x) -5 + 2x + (2x + 1) + 72 = 180 Reorder the terms: -5 + 2x + (1 + 2x) + 72 = 180 Remove parenthesis around (1 + 2x) -5 + 2x + 1 + 2x + 72 = 180 Reorder the terms: -5 + 1 + 72 + 2x + 2x = 180 Combine like terms: -5 + 1 = -4 -4 + 72 + 2x + 2x = 180 Combine like terms: -4 + 72 = 68 68 + 2x + 2x = 180 Combine like terms: 2x + 2x = 4x 68 + 4x = 180 Solving 68 + 4x = 180 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-68' to each side of the equation. 68 + -68 + 4x = 180 + -68 Combine like terms: 68 + -68 = 0 0 + 4x = 180 + -68 4x = 180 + -68 Combine like terms: 180 + -68 = 112 4x = 112 Divide each side by '4'. x = 28 Simplifying x = 28
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