Im completely lost as how to do some of these

log2 of 2x+log2 of x+5

7^2x-4=14

3e^x+7=9

log3 of x+log3^(x-6)=3

log4 (5x-2)=3

Expanding confuses me too

log3 of (7x^2/y)

One of condensing too

log2 of 7 +log2 of x - 3log2 of y