Log7 (2x-4)-log7(x+8)=0

Question

Log7 (2x-4)-log7(x+8)=0

Answer 1

Log7(2x-4)=log7(x+8)
2x-4=x+8
x=12

Comments

спасибо большое)

Answer 2

Log7 (2x-4)-log7(x+8)=0
log7 (2x-4)/(x+8)=0
log7 (2x-4)/(x+8)=log7(7)^0
(2x-4)/(x+8)=1
2x-4=x+8
x=12

Comments

спасибо