Help? I dont know how to do this problem, can you show me step by step?

0=1/2x-3

seperate the two, we get,

1/2x=3

this means, a half of x, equals 3.

So, what number, if halved, gives 3?...it is 6, so the next step

x=3/(1/2) or x= 3*2

both of these give the answer 6.