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Simplifying x(2 + 5) = 21 Combine like terms: 2 + 5 = 7 x(7) = 21 Reorder the terms for easier multiplication: 7x = 21 Solving 7x = 21 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '7'. x = 3 Simplifying x = 3
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