ajutaţi va rog frumos

Răspuns:
a)19/36 - 10/36=19-10/36=9/36 ( amplific cu 9)=1/4
11/16 - 7/16 =11-7/16= 4/16 ( amplific cu 4) =1/4
deci sunt egale
c) 19/17 +15/17 =19+15/17 = 34/17=2
23/9 - 2/9 =23-2/9 21/9 =2.(3)
2,(3) > 2