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Simplifying 2X + (x + 13) + x = 141 Reorder the terms: 2X + (13 + x) + x = 141 Remove parenthesis around (13 + x) 2X + 13 + x + x = 141 Reorder the terms: 13 + 2X + x + x = 141 Combine like terms: x + x = 2x 13 + 2X + 2x = 141 Solving 13 + 2X + 2x = 141 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-13' to each side of the equation. 13 + 2X + -13 + 2x = 141 + -13 Reorder the terms: 13 + -13 + 2X + 2x = 141 + -13 Combine like terms: 13 + -13 = 0 0 + 2X + 2x = 141 + -13 2X + 2x = 141 + -13 Combine like terms: 141 + -13 = 128 2X + 2x = 128 Add '-2x' to each side of the equation. 2X + 2x + -2x = 128 + -2x Combine like terms: 2x + -2x = 0 2X + 0 = 128 + -2x 2X = 128 + -2x Divide each side by '2'. X = 64 + -1x Simplifying X = 64 + -1x
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