Răspuns:
#include <iostream>
using namespace std;
int main()
{
int a,b;
cout<<"a=";
cin>>a;
cout<<"b=";
cin>>b;
if(a!=0)
cout<<"x="<<(float)-b/a;
else
{
if(b!=0)
cout<<"Ecuatia nu are solutie.";
else
cout<<"Ecuatia are o infinitate de solutii.";
}
return 0;
}
Explicație: