quá dễ
bài 1:
uses crt;
var a,b:integer;
begin
clrscr;
write('a='); readln(a);
write('b='); readln(b);
if a=0 then
if b=0 then writeln('phuong trinh co vo so nghiem')
else writeln('phuong trinh vo nghiem')
else writeln('phuong trinh co nghiem x=',-b/a:4:2);
readln;
end.
bài 2:
uses crt;
var x,y,a,b,ucln:integer;
{---------------------------------------------------------}
procedure nhap(var n:integer);
begin
write('nhap mot so nguyen bat ky='); readln(n);
end;
{---------------------------------------------------------}
procedure rutgon(var a,b:integer);
var x,y,ucln:integer;
begin
x:=a;
y:=b;
while x<>y do
begin
if x>y then x:=x-y
else y:=y-x;
end;
ucln:=x;
if ucln<>1 then
begin
a:=a div ucln;
b:=b div ucln;
writeln('phan so toi gian la: ',a,'/',b);
end
else writeln('phan so toi gian la: ',a,'/',b);
end;
{----------------------------------------------------------}
begin
clrscr;
nhap(a);
nhap(b);
rutgon(a,b);
readln;
end.
