???????????? kramers rule ?????????
???????? wotz all the d stuf ?????????
line 1: 6x +2y=-1...or 2y=-6x-1, so 10y=-30x-5
line 2: -x+10y=5 so -x -30x-5=5...-31x=10, so x=-10/31...x=-0.3225806451613
line 1+line2...(6x-6x)+(10y+60y)=(30-1)
70y=29, so y=29/70=0.414285714285728572857...