Question

1) //2x+1+//2x-4=5

2) Ig(x+4)=1+Ig(x-5)

Answer 1

lg(x+4)=1+lg(x-5)

lg(x+4)=lg10+lg(x-5)

lg(x+4)=lg10*(x-5)

(x+4)=10(x-5)

x+4=10x-50

54=9x

x=6