@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		SimpleArithmeticEquation other = (SimpleArithmeticEquation) obj;
		if (firstArgument != other.firstArgument)
			return false;
		if (operation != other.operation)
			return false;
		if (secondArgument != other.secondArgument)
			return false;
		return true;
	}