Răspuns :
[tex]\frac{1}{2}:\frac{3}{2}:\frac{4}{3}:\frac{5}{4}:\frac{6}{5}:\frac{7}{6}=\\ \\=\frac{1}{2}*\frac{2}{3}*\frac{3}{4}*\frac{4}{5}*\frac{5}{6}*\frac{6}{7} \\\\= 1/7\\\\Se~simplifica~2~cu~2, 3~cu 3 ....6~cu~6[/tex]
[tex]\frac{1}{2}:\frac{3}{2}:\frac{4}{3}:\frac{5}{4}:\frac{6}{5}:\frac{7}{6}=\\ \\=\frac{1}{2}*\frac{2}{3}*\frac{3}{4}*\frac{4}{5}*\frac{5}{6}*\frac{6}{7} \\\\= 1/7\\\\Se~simplifica~2~cu~2, 3~cu 3 ....6~cu~6[/tex]