u

import java.util.Scanner;

public class UE3_3_class {

  public static double a;
  public static double b;
  public static double x;
  public static double sprungweite = 0.5;

  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);

    System.out.println("Geben Sie a ein");
    a = sc.nextDouble();

    System.out.println("Geben Sie b ein");
    b = sc.nextDouble();

    for (boolean i = false; i == false; x = x + sprungweite) {

      if (a * x + b == 0) {
        i = true;
      } else {
        i = false;
      }
    }

    System.out.println("x=" + (x - sprungweite));
  }
}