1)7 3/4-3 1/2=7 3/4-3 2/4=4 1/4=4.25
2)-6/8-1/7=-42/56-8/56=-50/56=-25/28
3)-10 1/6+1 3/14=-10 7/42+1 9/42=-9 2/42=-9 1/21
4)-0.12+0.285=0.285-0.120=0.165
5)7/5-1 1/6=7/5-7/6=42/30-35/30=7/30
6)9/35*(-15/3)=-(9/35*15/3)=-(3/7*3/1)=-9/7=-1 2/7
7)-0.08+1=1-0.08=0.92
Пошаговое объяснение:
1)7 3/4-3 1/2=7 3/4-3 2/4=4 1/4=4.25
2)-6/8-1/7=-42/56-8/56=-50/56=-25/28
3)-10 1/6+1 3/14=-10 7/42+1 9/42=-9 2/42=-9 1/21
4)-0.12+0.285=0.285-0.120=0.165
5)7/5-1 1/6=7/5-7/6=42/30-35/30=7/30
6)9/35*(-15/3)=-(9/35*15/3)=-(3/7*3/1)=-9/7=-1 2/7
7)-0.08+1=1-0.08=0.92
Пошаговое объяснение: