Question

Хелп, плиз
log^7(8-2x)=-log^7 5
log 1/2(2x-4)=-2

Answer 1

1) log7 (8-2x)+log7 (5)=0
log7 (8-2x)*5=0
log7 (40-10x)=0
7^0=1
40-10x=1
-10x=-39
10x=39
x=3,9
2) (1/2)^-2=2^2=4
2x-4=4
2x=8
x=4