1)
3/6 15/21 3a/3b 6x/15y 3(x+2)/3(y+1) 3(a+b)/3(x+y)
2)
3n/4n 7n/2n an/bn 3an/7bn n(a+1)/n(b+3) n(a+b)/(x+y)
3)
²⁴⁾1/2 = 24/48
¹⁶⁾5/3 = 80/48
⁸⁾7/6 = 56/48
⁴⁾19/12 = 76/48
²⁾17/24 = 34/24
4)
⁸⁾4/5 = 32/40
¹⁶⁾2/17 = 32/272
⁴⁾8/7 = 32/28
²⁾16/23 = 32/46
³²⁾1/10 = 32/320
