Question 16252
(x+2)log5 = (1-x)log4
xlog5 + 2log5 = log4 - xlog4
xlog5 + xlog4 = log4 - 2log5
x(log5 + log4) = log4 - log25
--> x = (log4 - log25)/(log5 + log4)
--> x = -0.61173 to 5dp.


jon.