Question

помогите срочно сделать домашку.

Answer 1

Ответ:

Пошаговое объяснение:

$-\frac{3}{5} -\frac{7}{10}=-(\frac{6}{10}+\frac{7}{10} )=-\frac{13}{10} =-1\frac{3}{10} \\ \\ -\frac{3}{14} -\frac{5}{7} =-(\frac{3}{14}+\frac{10}{14})=-\frac{13}{14}\\ \\ -\frac{1}{6} -\frac{3}{10} =-(\frac{5}{30}+\frac{9}{30} )=-\frac{14}{30} =-\frac{7}{15} \\ \\ -\frac{3}{4} -\frac{1}{6}=-(\frac{9}{12}+\frac{2}{12} )=-\frac{11}{12}\\ \\ -\frac{3}{7} -\frac{5}{8}=-(\frac{24}{56} +\frac{35}{56})=-\frac{59}{56} =-1\frac{3}{56}$

$-1\frac{1}{2} -2\frac{1}{4} =-(1\frac{2}{4} +2\frac{1}{4} )=-3\frac{3}{4} \\ \\ -3\frac{1}{3} -4\frac{1}{6} =-(3\frac{2}{6} +4\frac{1}{6})=-7\frac{3}{6} =-7\frac{1}{2} \\ \\ -2\frac{1}{16} -5\frac{1}{4}=-( 2\frac{1}{16} +5\frac{4}{16})=-7\frac{5}{16} \\ \\ -6\frac{3}{4} -3\frac{2}{5}=-(6\frac{15}{20}+3\frac{8}{20})=-9\frac{23}{20} =-10\frac{3}{20}\\ \\ -1\frac{2}{3} -3\frac{3}{7} =-(1\frac{14}{21} +3\frac{9}{21} )=-4\frac{23}{21} =-5\frac{2}{21}$