Question

Sabendo que a= 3/4 e b= - 7/3
a) a+b
b) a.b
c) a:b

Answer 1

a) 3/4 + (-7/3) =
    9-28/12=
    -19/12

b) 3/4 . (-7/3) =
    -7/4

c) 3/4 : (-7/3) =
    3/4 . (-3/7) =
    -9/28