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Simplifying 40x + 20(1.5x) = 520 Remove parenthesis around (1.5x) 40x + 20 * 1.5x = 520 Multiply 20 * 1.5 40x + 30x = 520 Combine like terms: 40x + 30x = 70x 70x = 520 Solving 70x = 520 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '70'. x = 7.428571429 Simplifying x = 7.428571429
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