Question

решите уравнение log3(5x+4)=2+log3(4x-3)

Answer 1

log3(5x+4)=log3(9)+log3(4x-3)

log3(5x+4)=log3(9·(4x-3))

log3(5x+4)=log3(36x-27)

5x+4=36x-27

5x-27x=-27-4

-22x=-33

x=1,5

ответ 1,5