Выполните действия (в,г,д,е,ж,з)

В) 208/495:156/693=208/495*693/156=52/165*231/156=
=52/165*77/13=4/15*7/1=28/15=1 13/15
г) 525/735*882/1925=105/147*882/1925=21/49*294/385=
=3/1*6/55=30/55=6/11
д) 200/441*189/500=2/49*21/5=2/7*3/5=6/35
е) 297/1372:363/392=297/1372*392/363=99/126*56/121=
=9/28*8/11=9/7*2/11=18/77
ж) 64/81*27/96=2/3*1/3=2/9
з) 49/72:56/81=49/72*81/56=7/8*9/8=72/64=9/8=1 1/8