Răspuns:
Explicație pas cu pas:
9/30=3/10
4/20=1/5
7/14=1/2
3/10+²⁾1/5- ⁵⁾1/2=
3/10+2/10-5/10=
5/10-5/10= 0
-
6/28=3/14
6/12=1/2
10/35=2/7
3/14+⁷⁾1/2-²⁾2/7=
3/14+7/14-4/14=
10/14-4/14=
6/14= 3/7
-
5)
26/6:13/6=
26/6*6/13=
se simplifica 6 cu 6 ...si 13 cu 26
= 2
-
18/7: 12/14=
18/7*14/12=
se simplifica 14 cu 7 si ....18 cu 12
= 3*2
=6
