1) (6 7/12−5 11/15)⋅(4−2 4/17)=
=(395/60 -344/60)*1 13/17=
=17/20*30/17=
=1,5
2) 2 4/5х * 10/21 * 3 3/10х=
=14/5х*10/21х*33/10х=
=4/3х*33/10х=
=22/5х=
=4 2/5х=
=4,4х
3) 2010/2011=4044120/4046132
2011/2012=4044121/4046132
2010/2011 < 2011/2012
1) (6 7/12−5 11/15)⋅(4−2 4/17)=
=(395/60 -344/60)*1 13/17=
=17/20*30/17=
=1,5
2) 2 4/5х * 10/21 * 3 3/10х=
=14/5х*10/21х*33/10х=
=4/3х*33/10х=
=22/5х=
=4 2/5х=
=4,4х
3) 2010/2011=4044120/4046132
2011/2012=4044121/4046132
2010/2011 < 2011/2012