Question

вычислите 2 7/16÷1 7/8-5 7/9×2 1/13+4 4/5

Answer 1

$2 frac{7}{16}:1 frac{7}{8} -5 frac{7}{9}*2 frac{1}{13} +4 frac{4}{5} =$ $frac{39}{16}: frac{15}{8} - frac{52}{9}* frac{27}{13} +4 frac{4}{5} =frac{39}{16}* frac{8}{15} - frac{4}{1}* frac{3}{1} +4 frac{4}{5} =frac{13}{2}* frac{1}{5} - 12 +4 frac{4}{5}$ $=1frac{3}{10}- 12 +4 frac{4}{5} =1frac{3}{10}- 12 +4 frac{8}{10} =6 frac{1}{10} -12=-5 frac{9}{10}$