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Mathematics, 13.03.2021 06:30 birdman6360

I n a store, short shelves hold a items, and tall shelves hold b items. PART A Braedyn notices that there are 21 short shelves and 9 tall shelves. How can the expression 21a 1+ 9b help him find the total number of items on the shelves? Explain your reasoning.

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I n a store, short shelves hold a items, and tall shelves hold b items. PART A Braedyn notices that...
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