Calculati:
a) 2 supra 7: 3 supra 5
b) 3 intregi, 1 supra 3 :1 intreg, 1 supra 9
c) 65 supra 8 :4 intregi, 1 supra 16
d) 1 :3 intregi, 1 supra 7​

Răspuns:

[tex]a) =\frac{10}{21} \\\\b) =1\\\\c)=2\\\\d)=\frac{7}{22}[/tex]

Explicație pas cu pas:

[tex]a)\frac{2}{7} :\frac{3}{5} =\frac{2}{7} *\frac{5}{3} =\frac{10}{21} \\\\b)3\frac{1}{3} :1\frac{1}{9} =\frac{10}{3} :\frac{10}{3} =\frac{10}{3} *\frac{3}{10} =\frac{1}{1}=1\\ \\c)\frac{65}{8} :4\frac{1}{16} =\frac{65}{8} :\frac{65}{16} =\frac{65}{8} *\frac{16}{65} =\frac{2}{1} =2\\\\d)1:3\frac{1}{7} =\frac{1}{1}:\frac{22}{7} =\frac{1}{1} *\frac{7}{22} =\frac{7}{22}[/tex]

Succes! :)