2. a)4/7÷3/7=
4/7×7/3=4/3
b)5/6÷3/2=
5/6×2/3=5/9
c)6/9÷5/3=
6/9×3/5=6/15
d)5/12÷15/8=
5/12×8/15=8/36 se simplifica cu 4=2/9
e)9/8÷3/4=
9/8×4/3=3/2
f)5/6÷10/9=
5/6×9/10=3/4
3. a)8÷4/5=8/1÷4/5=
8/1×5/4=10/1
b)6/25÷9=6/25÷9/1=
6/25×1/9=2/75
c)15÷5/4=15/1÷5/4=
15/1×4/5=12/1
d)4 1/5÷7=4×5+1/5÷7/1=21/5÷7/1=
21/5×1/7=3/5
e)2 4/7÷9=2×7+4/7÷9/1=18/7÷9/1=
18/7×1/9=2/7
f)5 1/7÷12=5×7+1/7÷12/1=36/7÷12/1=
36/7×1/12=3/7
g)6 1/4÷15=6×4+1/4÷15/1=25/4÷15/1=
25/4×1/15=5/12
Sper ca te-am ajutat,coroana?
P.S. sper sa fie bune calculele deoarece le-am facut din cap.
