Question

Calculati : a) 1 supra 11 supra 2 b)1 supra 11 supra 2 ; c)1 supra 7 supra 3 supra 4 d) 3 intregi si 1 supra 7 supra 11 supra 21

Answer 1

$a). \frac{ \frac{1}{11} }{2} = \frac{1}{11} :2= \frac{1}{11} * \frac{1}{2} = \frac{1}{22} \\ \\ b).\frac{ \frac{1}{11} }{2} = \frac{1}{11} :2= \frac{1}{11} * \frac{1}{2} = \frac{1}{22} \\ \\ c). \frac{ \frac{1}{7} }{ \frac{3}{4} }= \frac{1}{7} : \frac{3}{4} = \frac{1}{7} * \frac{4}{3} = \frac{4}{21}$

$d). \frac{3 \frac{1}{7} }{ \frac{11}{21} } = \frac{ \frac{3*7+1}{7} }{ \frac{11}{21} } = \frac{ \frac{22}{7} }{ \frac{11}{21} } = \frac{22}{7} : \frac{11}{21} = \frac{22}{7} * \frac{21}{11} = \frac{462}{77} =6$