04 – Efetue as operações:
a) 2/3 + 5/7 =
b) 1/2 - 5/2 =
c) 3/4 * 1/4 =
d) 1/3 – 1/5 =
e) 2/3 * 7/5 =
f) 1/5 : 2/4 =
g) 3/4 : 2/4 =

ME AJUDEM PLS