Question

Calcule as frações com denominadores diferentes:

a) 1\2 + 5\6 =

b) 1\3 + 5\6 =

c) 1\2 + 2\3 + 3\4 =

d) 1\4 + 3\8 + 5\10 =​

Answer 1

Vamos là.

a) 1\2 + 5\6 = 3/6 + 5/6 = 8/6 = 4/3  

b) 1\3 + 5\6 = 2/6 + 5/6 = 7/6

c) 1\2 + 2\3 + 3\4 = 6/12 + 8/12 + 9/12 = 23/12  

d) 1\4 + 3\8 + 5\10 =​ 10/40 + 15/40 + 20/40 = 45/40 = 9/8