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Simplifying 7(2x + 3) = 189 Reorder the terms: 7(3 + 2x) = 189 (3 * 7 + 2x * 7) = 189 (21 + 14x) = 189 Solving 21 + 14x = 189 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 14x = 189 + -21 Combine like terms: 21 + -21 = 0 0 + 14x = 189 + -21 14x = 189 + -21 Combine like terms: 189 + -21 = 168 14x = 168 Divide each side by '14'. x = 12 Simplifying x = 12
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