1) (8-7 13/17)*(2 1/4+3 1/3-4 11/15)*1=4/17*(2 3/12+3 4/12-4 11/15)=
=4/17*(5 7/12-4 11/15)=4/17*(5 35/60-4 44/60)=
=4/17*(5 35/60-(4 35/60+9/60)=4/17*(5 35/60-4 35/60-9/60)=
=4/17*(1-9/60)=4/17*(1-3/20)=4/17*17/20=4/20=1/5=0,2
2) (9 9/14-7 10/21)*35+(11 2/15-8 3/25)*20+(9/32-9/32)*16=
=(9 27/42-7 20/42)*35+(11 10/75-8 9/75)*20+0*16=
=2 7/42*35+3 1/75*20+0=2 1/6*35+3 1/75*20=5(2 1/6*7+3 1/75*4)=
=5(13/6*7+226/75*4)=5(91/6+904/75)=5*1/3(91/2+904/25)=
=5/3(2275/50+1808/50)=5/3*4083/50=1/3*4083/10=1/1*1361/10=
=1361/10=136 1/10=136,1