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Simplifying 4(3x) = 72 Remove parenthesis around (3x) 4 * 3x = 72 Multiply 4 * 3 12x = 72 Solving 12x = 72 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '12'. x = 6 Simplifying x = 6
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