Question

а=(8,5+9 2/3)×60/109 и b=13 7/15+11,8)×300/370

Answer 1

a=(17/2+29/3)*60/109=(51/6+58/6)*60/109=109/6*60/109=10
b= (202/15+59/5)*300/379=(202/15+177/15)*300/379=379/15*300/379=20

Answer 2

спасибо большое