uses crt;
var a,b:integer;
begin
clrscr;
write('Nhap a='); readln(a);
write('Nhap b='); readln(b);
a:=a+b;
b:=a-b;
a:=a-b;
writeln('So a sau khi hoan doi la: ',a);
writeln('So b sau khi hoan doi la: ',b);
readln;
end.
Var a,b:real;
Begin
Write('Nhap so a = ');readln(a);
Write('Nhap so b = ');readln(b);
a:=a*b;
b:=a/b;
a:=a/b;
Writeln('a = ',a:10:2);
Write('b = ',b:10:2);
Readln;
End.