class Ex1_1_4 {
  public static void main(String[] args) {
    float a, b; // a*x + b = 0;
    a = 5.0f;
    b = 1.f;
    if (a == 0.) {
      System.out.println("Infinité de solutions");
    } else {
      System.out.println("La solution est x = " + (-b / a));
    }
  }
}