Vпар=acb=50*30*40=60000
Vкуба=а^3=40^3=64000
64000-60000=4000
<span>4,86/(-1,8)-0,8*2,3+6</span>=-2,7-1,84+6=1,46
3x-2 (y-1)=3×(-1)-2×(-4-1)=
3x-2y+2=-3+8+2
3x-2y=-3+8+2-2
3x-2y=5
Пустое множество, {12}, {14}, {17}, {29}, {12,14}, {12,17},{12,29},{14,17},{14,29},{17,29},{12,14,17},{12,14,29},{12,17,29},{14,17,29},{12,14,17,29}