Question 303956
log2 (x + 4) = 3 + log2 (x - 5) 
log2 (x + 4) - log2 (x - 5) = 3 
log2 (x + 4)/(x - 5) = 3 
(x + 4)/(x - 5) = 2^3 
(x + 4)/(x - 5) = 8
(x + 4) = 8(x - 5)
x + 4 = 8x - 40
x + 44 = 8x
44 = 7x
44/7 = x
6.2857 = x