Question

calculati cit mai simplu

8/9+14/27 +1/9

( 3/17+8/ 102) +14/17

(1/33+ 3/11 )+ 2/11

2/5 + ( 1/20 +4/5)

Answer 1

8/9+14/27 +1/9 =
=8/9+1/9+2/3  =
=9/9+2/3=
=1+2/3 = 5/3    sau 1 intreg si 2/3

( 3/17+8/102) +14/17=
= 3/17+4/51 +14/17=
= 3/17+14/17+4/51=
= 17/17+4/51=
=1+4/51 =55/51  sau 1 intreg si 4/51

(1/33+ 3/11 )+ 2/11=
=1/33+ 3/11 + 2/11=
=1/33+ 5/11=
=1/33+15/33=16/33

 2/5 + ( 1/20 +4/5) =
= 2/5 + 4/5+ 1/20=
= 6/5+ 1/20=
= 6*4/20+ 1/20=
=24/20+1/20=25/20=5/4  sau 1 intreg si 1/4