Question

A : 1 5/7 = 2 2/5 :2 2/35

Answer 1

$2 frac{2}{35} *a=1 frac{5}{7} *2 frac{2}{5} \ frac{72}{35} a= frac{12}{7} * frac{12}{5} \ frac{72}{35} a= frac{144}{35} \ a= frac{144}{35} * frac{35}{72} \ a=2$

Answer 2

Cпacибo

Answer 3

1)2 2/5*1 5/7=12/5*12/7=144/35;
2)144/35:2 2/35=144/35:72/35=144/35*35/72=2; А=2.

Answer 4

Cпacибo