a) 2/7 *15=30/7=4 и2/7
b)0,6*(17 и 1/2)=10,5
в)0,25*(48 и 2/3)= 12
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a) 2/7 *15=30/7=4 и2/7
b)0,6*(17 и 1/2)=10,5
в)0,25*(48 и 2/3)= 12