3
a^log(a)b=b
------------------
x+4/5>0⇒x>-4/5
8/5-3x=x+4/5
x+3x=8/5-4/5
4x=4/5
x=4/5:4
x=1/5
4
log(a)b+log(a)c=log(a)(b*c)
--------------------------
7/3*x-8>0
7/3*x>8
x>8:7/3
x>24/7
log(1,5)[3(7/3*x-8)]=log(1,5)4
3(7/3*x-8)=4
7x-24=4
7x=28
x=4
5
log(a)b-log(a)c=log(a)(b/c)
x-2>0⇒x>2
log(9)(16/(x-2))=log(9)10
16/(x-2)=10
x-2=1,6
x=3,6