7200*8=57600
64000*8=512000
96000*8=768000
7200:8=900
64000:8=8000
96000:8=12000
1.
а-б+с
2.
=17.6(1.8-4/5)=17.6(1.8-0.8)=17.6×1=17.6
3.
=-13у-5х
23ч02мин
21376+24×73-1947=21181
24×73=1752
21128+1752=23128
23128-1947=21181 ответ
У-1/3у=15/6
2/3у=15/6
у=15/6 ÷ 2/3
у=15/6 × 3/2
у= 45/12
у= 3.75