Question 602365
condensing logarithms
4log(base)6 4+1/7log(base)6(r-8)-1/2log(base)6r
=4log6(4)+1/7log6(r-8)-1/2log6(r)
=log6[(4^4)*(r-8)^(1/7)/r^(1/2)]
=log6[256*(r-8)^(1/7)/r^(1/2)]