Question

(7*6^n)/(6^(n-1)-6^(n+1))= помогите  решить   

Answer 1

=7* 6^n/(6^n *1/6 - 6^n *6)=7* 6^n/(6^n*(1/6-6))= 7* 1/(1/6-6)= 7/ (-5(целых) 5/6)
= -7*6/35= -6/5= -1.2