Math, asked by jayashreepadhi97, 7 months ago

answer please good question

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Answered by Cosmoak

0

Answer:

15

Step-by-step explanation:

As mentioned:-

45 is the sum of 27 & 18

Therefore, 18 + 21 = 39

And 36 - 21 = 15

The last one..... i.e.:-

13 + 7 = 21 is wrong because it doesn't satisfy the following situation!

Thankyou

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