tolong jawab ya ka No.2,4,6,8,10

2.)
1/2 + 1/5 = 5/10 + 2/10
= 7/10

4.)
4/9 + 3 2/6 = 4/9 + 20/6
= 24/54 + 180/54
= 204/54
= 34/9
= 3 7/9

6.)
4 3/11 + 5/6 = 47/11 + 5/6
= 282/66 + 55/66
= 337/66
= 5 7/66

8.)
6/18 + 4 4/6 = 6/18 + 28/6
= 6/18 + 84/18
= 90/18
= 5

10.)
1/12 + 11 7/20
= 1/12 + 227/20
= 20/240 + 2.724/240
= 2.744/240
= 343/20
= 11 13/30

pecahan penyebut nya harus sama
2.

2|5
-----2
1|5
-----5
1|1

=.../10+.../10

=1/2=1×(10÷2)=5/10
=1/5=1×(10÷5)=2/10

=5+2=7/10


4.

3 2/6=20/6

9|6
-----3
3|2
-----3
1|2
-----2
1|1

=.../18+.../18

4/9=4×(18÷9)=8/18
20/6=20×(18÷6)=60/18

=18+80=98/18

6.

4 3/11=47/11

11|6
------11
1|6
-------3
1|2
-------2
1|1

=.../66+.../66

47/11=47×(66÷11)=282/66
5/6=5×(66÷6)=55/66

282+55=337/66

8.

4 4/6=28/6

18|6
------3
6|2
------3
2|2
------2
1|1

=.../18+.../18

6/18=6×(18÷18)=6/18
28/6=28×(18÷6)=84/18

=84+6=90/18

10.

11 7/20=227/20

12|20
--------2
6|10
-------2
3|5
-------3
1|5
------5
1|1

=.../60+..../60

1/12=1×(60÷12)=5/60
227/20=227×(60÷20)=681/60

=5+681=686/60