<span>12,654х - 4,39у- 0,064у, при у= 0,4
</span><span>12,654х - 4,39у- 0,064у, =12,654х-4,326у= 12,654х-4,326*0,4=12,654х-1,7304
</span>
2/((0,3-25*3,5):0,27+34)=2/(0,3-87,5):0,27+34=2/(-87,2):0,27+34=2/(-322,96)+34=2/-(288,96)=-0,0069
НОК( 8, 20, 30)=2•3•5•2•2=120
Ответ: 120
32 : 12 = y : 9
32 • 9 = 12 • y
12y = 288
y = 288 : 12
y = 24