Solve 2 linear equations in 2 variables in C++

#include <iostream>
using namespace std ;
int main()
{
    float a1 , b1 , c1 , a2 , b2 , c2 , X , Y ;
    cout<<"a1X+b1Y=c1\na2X+b2Y=c2\n\n";
    cout<<"a1=";
    cin>>a1;
    cout<<"b1=";
    cin>>b1;
    cout<<"c1=";
    cin>>c1;
    cout<<"a2=";
    cin>>a2;
    cout<<"b2=";
    cin>>b2;
    cout<<"c2=";
    cin>>c2;
    X=(c1-c2*b1/b2)/(a1-a2*b1/b2);
    Y=(c1-c2*a1/a2)/(b1-b2*a1/a2);
    cout<<"\nX="<<X<<"\nY="<<Y;
}