Log11(4x–11)+log11*9=log11*243

Question

Log11(4x–11)+log11*9=log11*243

Answer 1

ОДЗ 4x-11>0⇒4x>11⇒x>11/4
log(11)[(4x-1)*9]-log(11)243
(4x-1)*9=243
4x-1=243:9=27
4x=27+1=28
x=28:4=7

Answer 2

4x-11>0⇒x>11/4 
log(11)9(4x-11)=log(11)243 
9(4x-11)=243 
4x-1=27 
4x=28 
x=7