could somebody help me with these questions...being able to see the work would be awesome and incredibly helpful! thank you!

1) write as a single logarithm and solve :

2log3(12)-2log3(4)

2)write as a single logarithm:

log3(x+2)-logx(2x-1)+log3(5)

3)solve for x: logx(x-1)=log8(x-1)