Question

resova as frações
a-7/9 + 3/5
b-2/4 + 1/3
c-2/5 + 1/7
d-1/2 - 3/8
e-2/3 - 4/7
d-3/5 + 2/9​

Answer 1

Resposta:

a) m.m.c (9,5) = 45

35/45 +27/45= 62/45

b) m.m.c =(4,3) = 12

6/12 + 4/12= 10/12

c)m.m.c =(5,7) = 35

14/35 + 5/35 = 19/35

d) m.m.c =(2,8) = 8

4/8 - 3/8 = 1/8

e) m.m.c = (3,7) = 21

14/21 - 12/21 = 2/21

d) m.m.c =(5,9)= 45

27/45 + 10/45 = 37/45