7-3/4; 1- 12/17; 5- 5/8; 9- 11/15 ; 10- 15/26

1)25/4 или 6 целых 1/4 2)5/17 3)35/8 или 4 целых 3/8 4)124/15 5)2590/26

1)  7-[latex] \frac{3}{4} [/latex]=6[latex] \frac{4}{4} - \frac{3}{4} [/latex] = 6[latex] \frac{1}{4} [/latex] 2)  1-[latex] \frac{12}{17} = \frac{17}{17}- \frac{12}{17}= \frac{17-12}{17}= \frac{5}{17} [/latex] 3)  [latex]5- \frac{5}{8} =4 \frac{8}{8} - \frac{5}{8} =4 \frac{8-5}{8} =4 \frac{3}{5} [/latex] 4)  [latex]9- \frac{11}{15} = 8 \frac{15}{15}- \frac{11}{15} =8 \frac{15-11}{15} =8 \frac{4}{15} [/latex] 5)  [latex]10- \frac{15}{26} =9 \frac{26}{26} - \frac{15}{26} =9 \frac{26-15}{26} =9 \frac{11}{26} [/latex]