Question

Помогите решить log9(5x+47)=3

Answer 1

5х+47=9³

5х=729-47

х=682/5

х=136,4

Answer 2

log9(5x+47) = 3
log9(5x + 47) = log9 729
5x + 47 = 729
5x = 682
x =  136,4
Ответ: 136, 4