Question

30.calcule.
a)1/2 + 3/7=
b)- 2/3 + 4/9=
c)5/3 + (-1/2)=
d)-1/3 + (-1)=​

Answer 1

Resposta:

a) 13/14

b) 1 ⅑

c)2⅙

d) -2/3