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Simplifying (3x + 21) * 2 = 49 Reorder the terms: (21 + 3x) * 2 = 49 Reorder the terms for easier multiplication: 2(21 + 3x) = 49 (21 * 2 + 3x * 2) = 49 (42 + 6x) = 49 Solving 42 + 6x = 49 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-42' to each side of the equation. 42 + -42 + 6x = 49 + -42 Combine like terms: 42 + -42 = 0 0 + 6x = 49 + -42 6x = 49 + -42 Combine like terms: 49 + -42 = 7 6x = 7 Divide each side by '6'. x = 1.166666667 Simplifying x = 1.166666667
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