Write a Java program which solve the equation

import java.math.BigDecimal;
import java.util.*;
public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayDeque<Double> x = new ArrayDeque<Double>();
        ArrayDeque<Double> y = new ArrayDeque<Double>();
        System.out.println("Input the value of a, b, c, d, e, f:");
            int a = sc.nextInt();
            int b = sc.nextInt();
            int c = sc.nextInt();
            int d = sc.nextInt();
            int e = sc.nextInt();
            int f = sc.nextInt();             
            double t = (double)(d*c-a*f)/(d*b-a*e);
            double s = (double)(c-t*b)/a;
            x.push(s);
            y.push(t);       
        int num = x.size();
        for(int i=0;i<num;i++){
            BigDecimal bdx = new BigDecimal(x.pollLast());
            BigDecimal bdy = new BigDecimal(y.pollLast()); 
            BigDecimal ansx = bdx.setScale(4, BigDecimal.ROUND_HALF_UP);
            BigDecimal ansy = bdy.setScale(4, BigDecimal.ROUND_HALF_UP);             
            System.out.printf("%.3f", ansx.doubleValue());
            System.out.print(" ");
            System.out.printf("%.3f", ansy.doubleValue());
            System.out.println();
        }         
    }
}

Sample Output:

Input the value of a, b, c, d, e, f:
 5 6 8 9 7 4
-1.684 2.737