Respuesta :

first, multiply everything by b. 7-2/b<5/b
then, move 2 over. 7b-2<5 so it would be 7b<7
then, divide both sides by 7. 7b/7<7/7
b<1
so check by plugging in. 
example b=1/2. 7-2(1/2)<5(1/2)
7-4<10
3<10

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