//
//	solve the linear equ. ax+b=0
//

import java.util.*;
class LinearEq2
{
	public static void main(String[] args)
	{
		Scanner input = new Scanner(System.in);
		double a, b, x;
		String answer;
		boolean go = true;

		while(go)
		{
			System.out.print("\nInput a: ");
			a = input.nextDouble();
			System.out.print("Input b: ");
			b = input.nextDouble();

			x = -b/a;
			System.out.println("x = " + x);

			// uodate go?
			System.out.print("\n\nGo on (yes/no): ");
			answer = input.next();
			if(answer.equalsIgnoreCase("no"))
				go = false;
		}

		System.out.println("\n\nDone.\n\n\n");
	}
}