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Simplifying 40(x) + 6(1.5X) = 640 Remove parenthesis around (1.5X) 40x + 6 * 1.5X = 640 Multiply 6 * 1.5 40x + 9X = 640 Reorder the terms: 9X + 40x = 640 Solving 9X + 40x = 640 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-40x' to each side of the equation. 9X + 40x + -40x = 640 + -40x Combine like terms: 40x + -40x = 0 9X + 0 = 640 + -40x 9X = 640 + -40x Divide each side by '9'. X = 71.11111111 + -4.444444444x Simplifying X = 71.11111111 + -4.444444444x
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