---

const
  n = 5; m = 4;
var
  a: array[1..n, 1..m] of real;
  b: array[1..n] of real;
  i, j: integer;
begin
  writeln('исходная матрица А:');
  for i := 1 to n do
  begin
    for j := 1 to m do
    begin
      a[i,j] := random(100)/10;
      write(a[i,j]:6:1);
    end;;
    writeln;
  end;
end.