123/234+123123/234234+123123123/234234234=?

123/234+123123/234234+123123123/234234234=? 123+123123+123123123 / 234+234234+234234234的简便算法 123+123123/234+234234 请为它约分,不要化成带分数 123+123123+123123123/432+432432+432432432 123123+123 123+234=? 123*123+123/123*123123+123123是多少 123123…123123个123 123+234+345+456=? 123*234*345*456= 123123*321-321321*123 123123加123等于