Question

from where did 2 come here with a circle with red colour, the question is about the blue line, if you answer is wrong you will be reported, if your answer is correct you get extra 20 points form me.​

Answer 1

LCM is taken in this question....

Answer 2

I probably think that you know the concept of lcm. So when you’ll take the lcm of 2,3 it will give you a 6 . Hence then you’ll multiply the term which had 3 as the denominator by 2.