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If b = the number of blackbirds that flew away, which mathematical sentence expresses the information above.

If b the number of blackbirds that flew away which mathematical sentence expresses the information above class=

Respuesta :

B. 120 - b = 85. Since b is the number of blackbirds that flew away you want to subject the original from b to get 85. Hope I helped!
120 - b = 85 because 85 is what's left after b is shown that it means the birds flying away.