3 целых -8/20 = ? 4 целых - 2 целых 2/11 = ? 5 целых 2/5 - 4/5 = ? 9 целых 16/25 - 6/25 = ? 1/3 - 1/4 = ? 2/3 -1/7 = ? 3/5 + 3/10 = ? Решит...

[latex]1) 3 - \frac{8}{20} = \frac{3}{1} - \frac{8}{20} = \frac{60}{20} - \frac{8}{20} = \frac{52}{20}[/latex] 2) [latex] 4 - 2\frac{2}{11} = \frac{4}{1} - \frac{23}{11} = \frac{44}{11} - \frac{23}{11} = \frac{21}{11} [/latex] 3)[latex]5 \frac{2}{5} - \frac{4}{5} = \frac{27}{5} - \frac{4}{5} = \frac{23}{5} [/latex] 4) [latex]9 \frac{16}{25} - \frac{6}{25} = \frac{241}{25} - \frac{6}{25} = \frac{235}{25} [/latex] 5) 1\3 - 1\4 = 4\12 - 3\12 = 1\12 6) 2\3 - 1\7 = 14\21 - 3\21 = 11\21 7) 3\5 + 3\10 = 6\10 + 3\10 = 9\10

3 - 8/20 = 2 20/20 - 8/20 = 2 12/20 = 2 3/5 4 - 2 2/11 = 3 11/11 - 2 2/11 = 1 9/11 5 2/5 - 4/5 = 4 7/5 - 4/5 = 4 3/5 9 16/25 - 6/25 = 9 10/25 = 9 2/5 1/3 -1/4 = 4/12 - 3/12 = 1/12 2/3 - 1/7 = 14/21 - 3/21 = 11/21 3/5 + 3/10 = 6/10 + 3/10 = 9/10