Question

por favor me ajudem preciso disso

Answer 1

b)6/7+3/5

MMC (7,5)=35

5*6/35+7*3/35

30/35+21+35

51/35

e)1/7+2/3

MMC (7,3)=21

3*1/21+7*2/21

3/21+14/21

3+14/21

17/21

f)5/7-1/3

MMC (7,3)=21

3*5/21-7*1/21

15/21-7/21

8/21

g)8/9-2/3

MMC (9,3)=3*3*3=27

3*8/27-9*2/27

24/27-18/27

6/27