1。 "If you all go, add me."

The "I" in your example obviously refers to one person, not many people. However, the number of "-"in homework is linguistically uncertain, which can be one or more. This is precisely the problem of this problem.

2。 "Negative numbers and numbers with negative signs are two different concepts"

The concept of negative numbers is really different from that of signed numbers. The signed number after the operation may be positive or negative. This just shows that this question needs to be clearly stated whether to add a "-"or multiple "-"to know whether the signed number is exactly negative.

3。 "From the perspective of the questioner"

First of all, the questioner's language should be rigorous, and this question should clearly mean "plus one" rather than "plus". Mathematics is to cultivate the rigor of language and thinking. There is no question of walking into a dead end.