Question

1 si 3/4+(1/2-2/5)+(1/4+1/2-2/5)

Answer 1

1 intreg si 3/4 = (1×4+3)/4 = 7/4

7/4 +( 1/2 - 2/5) + ( 1/4+1/2- 2/5)=
=7/4 + ( 5/10 - 4/10) + ( 5/20 + 10/20 - 8/20)=
=7/4 + 1/10 + 7/20=
=35/20 + 2/20 +7/20 =
=44/20=
=11/5=
= 2 intregi si 1/5
=2,2