1/3+1/4 Answer is not 2/7. Many failed! Can you? #math #trending #explore #add #fractions #fastandeasymaths #logicalstation #mathspuzzles #brainchallenge

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Transcript

00:00Welcome everyone. So today we are going to understand why the answer for this question should not be 2 by 7.

00:05See here we think that the numerators are same. So we can directly add the numerators which is 1 plus 1 is 2

00:12and we directly do the same for the denominator which is 3 plus 4 which is 7.

00:17No, that's not how these things work especially when there is a addition involved with a fraction.

00:22You can only add the numerators if the denominators are equal.

00:27Now in this case how do I make them equal? See 4 and 3 have nothing in common.

00:32So the LCM of this one should have been 12. LCM of 3,4 is 12.

00:40So basically we are trying to keep the denominators same. So we need to multiply 3 by 4.

00:47So whatever operation happens in the denominator should be doing the same in the numerator as well.

00:52Here also I will do it this way.

00:55So now I have 4 by 12 plus 3 by 12.

01:00Now since the denominators are same I can directly add them.

01:034 plus 3 by 12.

01:05The answer for this question is supposed to be 7 by 12.

01:09I hope this is very very clear to everyone.

01:12That's it for today. I will see you in the next video.

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