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Simplifying x + (x + 2) = 143 Reorder the terms: x + (2 + x) = 143 Remove parenthesis around (2 + x) x + 2 + x = 143 Reorder the terms: 2 + x + x = 143 Combine like terms: x + x = 2x 2 + 2x = 143 Solving 2 + 2x = 143 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + 2x = 143 + -2 Combine like terms: 2 + -2 = 0 0 + 2x = 143 + -2 2x = 143 + -2 Combine like terms: 143 + -2 = 141 2x = 141 Divide each side by '2'. x = 70.5 Simplifying x = 70.5
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