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225=135*1+110 135=110*1+25 110=25*4+10 25=10*2+5 10=5*2+0 so, the HCF of 135 and225 is 5.
you write with a pen
To simplify a multiplication or division involving fractions, you need to find common factors. For small numbers, you might just try to do a complete factorization of each of the numbers involved. It's best not to multiply them in the first place; it doesn't really make sense to multiply and then factorize again. For larger numbers, you can use Euclid's algorithm to find the greatest common factor.
First of all, Euclid was from Athens, not from Alexandria. Second, he learned in Athens and he went to the Library at Alexandria to teach.Where can i find the source of this information?
You do the division!