Question

Determine,as diferenças a)1/3-1/5 b)5/4-4/5 c)3-2/5 d)3-1/2-2 3/4

Answer 1

a)1/3-1/5  =(5-3)/15=2/15


b)5/4-4/5 =(25-16)/20 =9/20


c)3-2/5  =(15-2)/5=13/5

d)3-1/2-2 3/4 =3 -1/2 -11/4=3-2/4-11/4 =3-13/4 =(12-13)/4=-1/4