说到负数的诞生,还要从我国一部数学专著——《九章算术》说起.《九章算术》共收录了246个数学问题,分为九章,故称《九章算术》.《九章算术》在“方程”章第三题中明确提出了正负术.关于正负数的加减运算法则,正负术曰:同名相益,异名相除,正无入负之,负无入正之.其异名相除,同名相益,正无入正之,负无入负之.这里所说的“同名”“异名”分别相 Speaking of the birth of the negative, but also from a math monograph in our country - “Chapter IX arithmetic.” “Nine chapters arithmetic” contains a total of 246 mathematical problems, divided into nine chapters, so called “nine chapters arithmetic.” “Nine chapters of arithmetic” in the “equation ” the third question clearly put forward the plus and minus surgery .On the plus and minus the addition and subtraction algorithm, plus or minus said: the same name benefits, Negative, negative no positive is positive. The difference between the synonyms, the same name benefits, is no positive, negative no negative. Here to say “the same name ” “synonyms ”, respectively