text: multiply (-3a^2b/35a^5)x (14a^3b^2/-9b^4) = i say 2/15b help me put it on paper.....?   the expression simplifies to   (3*14/35*9)(a^2b*a^3b^2/a^5*b^4)  3 is a factor of 9 and 14 and 35 have the common factor 7  so, (2/15) (a^5b^3/a^5b^4) = 2/15b  there you have it.