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Rico and his friend eat lasagna. Rico eats 1/9 of the lasagna, and his friend eats 1/18 of the lasagna. How much of the lasagna is left? (20 points for this one!)
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Rico and his friend eat lasagna. Rico eats 1/9 of the lasagna, and his friend eats 1/18 of the lasagna. How much of the lasagna is left?

(20 points for this one!)

User Roderick Obrist
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5.2k points

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1 - (1/9 + 1/18) = 1 - (2/18 + 1/18) = 1 - (3/18) = 1 - (1/6) = 5/6 is left
User Miguel Rodrigues
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