Cramer's Rule

import java.util.Scanner;
public class Chapter3_3CramersRule {

    public static void main(String[] args) {
        Scanner kb = new Scanner (System.in);
        System.out.println("Enter a,b,c,d,e,and f");
        double a = kb.nextDouble();
        double b = kb.nextDouble();
        double c = kb.nextDouble();
        double d = kb.nextDouble();
        double e = kb.nextDouble();
        double f = kb.nextDouble();
        double x = 0;  // you must initialize the variable to something.  0 is good in this case
        double y = 0;  // you must initialize the variable to something.  0 is good in this case

        if ((a*d - b*c) !=0){
            x = (e*d - b*f)/(a*d - b*c);
            y = (a*f - e*c)/(a*d - b*c);
            System.out.println("x is "+ x + " and y is "+ y);
        }
        else
            System.out.println("The equation has no solutions");
    }

}