Question

A)1/2 + 1/3=
B)2/5 + 3/5=
C)6/7 - 3/4=
D)1/4 - 1/5 =
E)3/10. 1/7=
F)2/5 . 3/7=
G)2/3 : 1/7=
H)1/2 : 2/9=

Answer 1

Explicação passo-a-passo:

A)m.m.c de2 e3=6

1 +1. = 3+2 =5

2. 3. 6. 6

B)2/5+3/5

2.+3 =8

5. 5. 5

C)6/7-3/4

m.m.c.de7e4=28

6 - 3= 24-21 = 3

7. 4. 28. 28

D)1/4-1/5. m.m.c de 4e5= 20

1 - 1= 5-4 =1

4. 5. 20. 20

E)3/10.1/7

3 . 1 =3

10 7 70

F) 2/5.3/7

2.3 6

5 7 35

G) 2/3÷1/7

2×7=14

3. 1. 3

H) 1/2÷2/9

1 ×9=9

2. 2 4