Question

Efetue

b) (3/4 + 1/2) + 1/5 =

c) 2/3 + (1/5+ 1/10)

d) ( 3/4 + 1/8) + 5/4

Com os calculos se for possivel, please

Answer 1

b ) (3/4 + 1/2) + 1/5 =
(15/20 + 10/20) + 4/20 =
25/20 + 4/20 =
29/20

c) 2/3 + (1/5 + 1/10) =
20/30 + (6/30 + 3/30) =
20/30 + 9/30 =
29/30

d) (3/4 + 1/8) + 5/4 =
(6/8 + 1/8) + 10/8 =
7/8 + 10/8 =
17/8