а) 2 5/12-7.5:( 1 5/8- 6 9/16)
1) 1 5/8-6 9/16=-(6 9/16-1 10/16)=-4 15/16=-79/16
2)-31/4*(-16/79)=31*4/79=124/79=1 45/79
3) 2 5/12+1 45/79= 3 935/(12*79)=3 935/948
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а) 2 5/12-7.5:( 1 5/8- 6 9/16)
1) 1 5/8-6 9/16=-(6 9/16-1 10/16)=-4 15/16=-79/16
2)-31/4*(-16/79)=31*4/79=124/79=1 45/79
3) 2 5/12+1 45/79= 3 935/(12*79)=3 935/948