Which symbol correctly compared the two fractions 2/3 and 4/6

They both equal so symbol is "=" they have LCM of 3.

Remark

First of all youhave to know the values of each of the fractions. Then you can compare them.

Solution

2/3 = 0.666667 Your calculator will tell you this value.

4/6 = 0.666667 This is something that also comes the calculator

Since both of them are the same, you should show it as

2/3 = 4/6