A "careless" classmate miswrote the subtrahend "-5" as "+5" when doing rational number subtraction, so that the result of his calculation is much less than the correct answer
一位"粗心"的同学在做有理数减法的运算时，将减数"-5"错写成"+5"，这样他运算的结果比正确答案少多少
<result>10</result>