2/4 + 3/6+ 4/8 = 5/10 + 3/4 + 2/5= 4/6 + 2/4 + 3/5= 5/6 + 2/3 + 4/5= 7/8 + 2/5 + 3/10=

1). 2/4 + 3/6 + 4/8 = 12/24 + 12/24 + 12/24 = 36/24= 3/2 = 1 1/2
2). 5/10 + 3/4 + 2/5 = 10/20 + 15/20 + 8/20 = 33/20= 1 13/20
3). 4/6 + 2/4 + 3/5 = 40/60 + 30/60 + 36/60 = 106/60=53/30 = 1 23/30
4). 5/6 + 2/3 + 4/5 = 25/30 + 20/30 + 24/30 = 69/30=23/10 = 2 3/10
5). 7/8 + 2/5 + 3/10 = 35/40 + 16/40 + 12/40 = 63/40= 1 23/40

semoga membantu :)