Question

0,1х-y=1 0,3х+y=3 решить систему

Answer 1

x-10y=10, 3x+y=3
y=3-3x
x-10(3-3x)=10, x-30+30x=10,31x=40, x = 40/31
y = 3 - 3.40/31 = 3-120/31 = -27/31
/x,y/ = / 40/31, -27/31/