1/4+1/6=? /12+? /12=?
can you with this?

So what there asking is what is the numerator after rewriting the fractions
They simply want you to write the equlivalent fractions so that the fractions can be added

1/4+1/6
=3/12+2/12            
>1/4 and 1/6 were multiplied by 3, to give a common denominator of 12 
= 5/12
> With the same denominator the numerators were added