Question

resolva; a) 1/2+3/7 .b)2/-3+4/9. c)5/3+(-1/2). d)-1/3+(-1)

Answer 1

Explicação passo-a-passo:

a) 1/2 + 3/7 =

1.7 + 3.2/2.7 =

7 + 6/14 =

13/14

b) 2/-3 + 4/9 =

2.9 + (-3.4) /9.-3=

18 - 12/-27=

6/-27= 2/-9

c) 5/3 + (-1/2) =

5/3 - 1/2 =

5.2 + 1.3/3.2 =

10 + 3 /6 =

13/6

d) -1/3 + (-1) =

-1/3 - 1/1 =

-1.1 + 3.(-1)/3.1

-1 - 3/3 =

-4/3