Question

efectua las siguientes operaciones y simplifica 1/6+(-2/3)-(-1/2),2/7+3/14+2/21+1/42+5/14+1/7,3/10+2/5+9/10+13/20+1/2,11/7-4/14,17/21-23/42,2/3.9/14+4/5.15/16

Answer 1

1/6+(-2/3)-(-1/2)=mcm=6 seria 1/6 -4/6 +3/6=0

2/7+3/14+2/21+1/42+5/14+1/7=mcm=42=12/42+9/42+4/42+1/42+15/42+6/42=47/42

3/10+2/5+9/10+13/20+1/2=mcm=20=6/20+8/20+18/20+13/20+10/20=55/20=11/4.

11/7-4/14=mcm=14=22/14-4/14=18/14=9/7

17/21-23/42=mcm=42=34/42-23/42=11/42

2/3.9/14+4/5.15/16=18/42+60/80=mcm=1680=720/1680+1260/1680=1980/1680=33/28.

espero haberte ayudado