Question

Вычислите 5 2/5 * 1 1/9 - 4 4/7 * 1 3/4

Answer 1

1) $5 frac{2}{5}*1 frac{1}{9}= frac{27*10}{5*9}= frac{3*2}{1*1} =6$
2) $4 frac{4}{7}*1 frac{3}{4}= frac{32*7}{7*4}= frac{8*1}{1*1}=8$
3) 6-8=-2