1
2
log(3)(3*8)/log(9*8)(3 -log(3(8*27)/log(8)3=
(1+3log(3)2):1/(2+3log(3)2 -(3+3log(3)2):1/3log(3)2=
=(1+3log(3)2)(2+3log(3)2)-3log(3)2*(3+3log(3)2)=
=3+3log(3)2+6log(3)2+9log²(3)2-9log(3)2-9log²(3)2=2
3
42*(49^0,5log(7)9 : 49^log(7)6+5^log(√5)(1/4))=
=72*(7^log(7)9:7^lof(7)36 +√5^log(√5)(1/16))=
=72*(9:36+1/16)=72*9/36+72*1/16=18+4,5=22,5