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Simplifying (7x) * 3 = 0 Remove parenthesis around (7x) 7x * 3 = 0 Reorder the terms for easier multiplication: 7 * 3x = 0 Multiply 7 * 3 21x = 0 Solving 21x = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '21'. x = 0 Simplifying x = 0
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