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Simplifying x + x + 7 = 155 Reorder the terms: 7 + x + x = 155 Combine like terms: x + x = 2x 7 + 2x = 155 Solving 7 + 2x = 155 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 2x = 155 + -7 Combine like terms: 7 + -7 = 0 0 + 2x = 155 + -7 2x = 155 + -7 Combine like terms: 155 + -7 = 148 2x = 148 Divide each side by '2'. x = 74 Simplifying x = 74
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