Question

Alguem Me ajudemmm pofvoooooorr e pra amanha,pfavor me ajudeeeeemmmm pfavoooorr
1)efetue

exemplo:

a) 2/3 - 1/5 = 10/15 - 3/15= 7/15


exercicios:


b) 4/7 + 1/2 -2/4


c) 5/9 - 1/3 + 4/4


complete

Answer 1

1 -

b) 4/7 + 1/2 - 2/4 =

16/28 + 14/28 - 14/28 =

16/28 =

16/28 =4/7

c) 5/9 - 1/3 + 4/4 =

20/36 - 12/36 + 36/36 =

44/36 =

44/36 =11/9