program pil_9_33(input, output);
const n=2;
var a : array[1..n,1..n] of real;
    b, x : array[1..n] of real;
    i, j : integer;
    sum:real;
begin
     for i:=1 to n do
     begin
         for j:=i to n do
             read(a[i,j]);
         readln;
     end;
     for i:=1 to n do read(b[i]);
     for i:=n downto 1 do
     begin
          sum:=0;
          for j:=i+1 to n do sum := sum + a[i,j] * x[j];
          x[i]:=(b[i]-sum)/a[i,i];
     end;
     for i:=1 to n do
         writeln('x',i,'=',x[i]:1:2);
end.