Expression 1: 6x - 6y
Expression 2: (x - y) + (x - y) + (x - y) + (x - y) + (x - y) + (x - y) = 6(x - y)
These two expressions being equivalent means that regardless of the specific values of x and y, the difference between the number of strawberry packages and cherry packages that Nina bought will always be the same.
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A supermarket sells fruit snacks by the box. Each box holds x packages of strawberry snacks and y packages of cherry snacks. Nina bought 6 boxes.
Write two expressions for how many more strawberry packages than cherry packages Nina bought. Then, write what the two expressions being equivalent means in terms of the situation.
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