Question

como resolver ln 10-ln(7-x)=lnx

Answer 1

ln 10/(7-x) = ln x

10/ 7-x = x
10 = x (7-x)
10= 7x -x^2
x^2 -7x +10 =0
(x-2)(x-5)=0
x1 = 2
x2= 5
Las soluciones son 2 y 5