Д) (70*27,54)+(70*31,46)= 4130
1. 70*27,54=1927,8
2. 70*31,46=2202,2
3. 1927,8+2202,2=4130
ж) (58*62,17)-(58*15,17)=2726
1. 58*62,17=3605,86
2. 58*15,17=879,86
3. 3605,86-879,86=2726
з) (64*43,27)-(64*31,27)=768
1. 64*43,27=2769,28
2. 64*31,27=2001,28
3. 2769,28-2001,28=768
е) (204*31,18)+(204*11,82)=8772
1. 204*31,18=6360,72
2. 204*11,82=2411,28
3. 6360,72+2411,28=8772