Explicație pas cu pas:
a) 3/2+5/2=8/2
8/2× 4/15
( inmultim numitori cu numitori si numaratori cu numaratori)
32/30
(simplificam prin 2)
16/15
b)5/6+1/6=6/6
6/6×4/5=24/30
(simplificam prin 2)
6/15
c)7/2-2/5= 5/5
5/5×3/2=15/10
(simplificam prin 5)
3/2
d)10/3-2/3=8/3
8/3÷ 4/5
( inversam fractia!!)
8/3× 5/4
( simplificam 8 cu 4)
2/3×5/1
10/3
