954×36789-954×28749-2877790÷(14038÷1+0×54786)=954×(36789-28749)-2877790÷(14038+0)=954×8040-2877790÷14038=7670160-205=7669955
а)(12 1/18-7 5/18)-2 17/18=(11 19/18-7 5/18)-2 17/18=4 14/18-2 17/18=3 32/18-2 17/18=1 15/18
б)16 4/9-(3 7/9+8 8/9)=16 4/9-11 15/9=16 4/9-12 6/9=15 13/9-12 6/9=3 7/9
в)(11 2/7-5 4/7)+(1 3/7+4 6/7)=(10 9/7-5 4/7)+6 2/7=5 5/7+6 2/7=11 7/7=12
г)(6 8/11+2 5/11)-(10 3/11-5 9/11)=9 2/11-(9 14/11-5 9/11)=9 2/11-4 5/11=8 13/11-4 5/11=4 8/11