How do you solve 16^(d-4)=3^(3-d)?

1 Answer
Oct 19, 2016

d=3.7162

Explanation:

As 16^(d-4)=3^(3-d), taking log to the base 10 on both sides, we get

(d-4)log16=(3-d)log3

or d xxlog16-4log16=3 xx log3-d xxlog3

or d(log16+log3)=3xxlog3+4log16

or d=(3xxlog3+4log16)/log48

= (3xx0.4771+4xx1.2041)/1.6812

= (1.4313+4.8164)/1.6812

= 6.2477/1.6812=3.7162