1. a)85,6+7,86=93,46
б)6-2,21=3,79
в)55,1*0,9=49,59
2. a)0,2*32,3-15/0,6=6,46-25=-18,54
б)-16/(4*(-7)+20)=-16/(-28+20)=-16/-8=2
3.-19/25+2/5*(-0,6)=19/25-0,24
19/25=0,76
0,76-0,24=0,52
1. a)85,6+7,86=93,46
б)6-2,21=3,79
в)55,1*0,9=49,59
2. a)0,2*32,3-15/0,6=6,46-25=-18,54
б)-16/(4*(-7)+20)=-16/(-28+20)=-16/-8=2
3.-19/25+2/5*(-0,6)=19/25-0,24
19/25=0,76
0,76-0,24=0,52