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Simplifying (7 + x) * 2 + (7x) * 2 = 130 Reorder the terms for easier multiplication: 2(7 + x) + (7x) * 2 = 130 (7 * 2 + x * 2) + (7x) * 2 = 130 (14 + 2x) + (7x) * 2 = 130 Remove parenthesis around (7x) 14 + 2x + 7x * 2 = 130 Reorder the terms for easier multiplication: 14 + 2x + 7 * 2x = 130 Multiply 7 * 2 14 + 2x + 14x = 130 Combine like terms: 2x + 14x = 16x 14 + 16x = 130 Solving 14 + 16x = 130 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + 16x = 130 + -14 Combine like terms: 14 + -14 = 0 0 + 16x = 130 + -14 16x = 130 + -14 Combine like terms: 130 + -14 = 116 16x = 116 Divide each side by '16'. x = 7.25 Simplifying x = 7.25
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