Запоните пропуски пжжжжжжжжжжжжжжжжжжжжжжжжжжжжжжжж!!!!!!!!!!!!!!!! В зарание спасибо

1)1/3=2/6=3/9=4/12=5/15=6/18=7/21=8/24
2)1/4=2/8=3/12=4/16=5/20=6/24=7/32
3)2/5=4/10=6/15=8/20=10/25=12/30=14/35=16/40
4)3/7=6/14=9/21=12/28=15/36=18/42=21/48=24/56