Б)
4/8=(1*4)/(2/4)=1/2
9/36=(1*9)/(4*9)=1/4
7/28=(1*7)/(4*7)=1/4
5/35=(1*5)/(7*5)=1/7
в)
2/8=(1*2)/(4/2)=1/4
8/24=(1*8)/(3*8)=1/3
12/28=(3*4)/(7*4)=3/7
45/100=(5*9)/(5*20)=9/20
г)
25/35=(5*5)/(5*7)=5/7
45/54=(5*9)/(6*9)=5/6
8/400=(8*1)/(8*50)=1/50
32/256=(1*32)/(8*32)=1/8
д)
12/18=(6*2)/(6*3)=2/3
18/20=(2*9)/(2*10)=9/10
20/24=(4*5)/(4*6)=5/6
24/30=(6*4)/(6*5)=4/5
е)
56/49=(7*8)/(7*7)=8/7=1 1/7
40/32=(8*5)/(8*4)=5/4=1 1/4
48/36=(12*4)/(12*3)=4/3=1 1/3
28/21=(4*7)/(3*7)=4/3=1 1/3
ж)
21/56=(7*3)/(7*8)=3/8
144/120=(12*12)/(12*10)=12/10=(2*6)/(2*5)=6/5=1 1/5
156/128=(4*39)/(4*32)=39/32=1 7/32
396/240=(6*66)/(6*40)=66/40=(2*33)/(2*20)=33/20=1 13/20