47/5=9 2/5 11/3=3 2/3 19/12=1 7/12 48/16=3 355/100=3 11/20
817/121=6 91/121 3407/100=34 7/100
1 2/3=5/3 5 4/11=59/11 7 13/17=132/17 9 45/51=504/51 8 9/100=809/100
6 13/1000=6013/1000
2)(34-3):4=7км750м в час=7,75(км.ч)
<span>а).-1 5/6+(-3 5/12)=-11/6-41/12=-22/12-41/12=-63/12=-5 1/4 б). -1 2/15+3 5/6+(-1,7)</span>=-17/15-17/10+23/6=-85/30+23/6=-85/30+115/30=30/30=1