А)
360/540=2/3=400/600
42/720=7/120=35/600
210/1260=1/6=100/600
360/6000=3/50=36/600
теперь можно сравнить
35/600 36/600 100/600 400/600
42/720 < 360/600<210/1260<360/540</strong>
б)
132/297=12/27=40 656/91476
99/252=11/28=35 937/91476
120/165=8/11=8 316/91476
120/363=40/121=30 240/91476
27=9*3
28=7*2*2
121=11*11
121*28*27=91 476
8 316/91476<30 240/91476<35 937/91476<40 656/91476<br>
120/165<120/363<99/252<132/297</u>