Rewrite the problem by replacing the variable with its value.
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First reverse the Addition/Subtraction, then reverse the Multiplication/Division. 3(4x + 5x) = 12x + 15x = 27x Sales Tax, Gratuity, Commission, Interest, Discounts Change the percent to a decimal and multiply. RATIO: Comparing Two Quantities UNIT RATE: The rate per one quantity Multiply Numerators Multiply Denominators SAME SIGNS = POSITIVE DIFFERENT SIGNS = NEGATIVE |
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