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Trey is buying peach and blueberry yogurt cups. He will but at most 8 cups of yogurt. Let x be the number of peach yogurt and y be the number of blueberry yogurt cups he buys.

User Ravindu
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X+Y=8, because Trey is buying both peach and blueberry so X is peach and Y is blueberry. The total is 8 
User Hommy
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