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inverse exist i know but how can i express -2or -3 in the from of 1 bcz 1 is a generator and by defination it generate every element of z but how can i express the negative number in the from of 1 as a generator
all positive number generated by 1 and all nagative numbers by invrse of postive number
similarly all nagitive number generated by -1 and all.postive numbers by inverse
put a=1