How does 9 plus 7 equals 4?

Answer #1:

Because 9+7 = 16 and the square root of 16 is 4

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Answer #2:

The first answer has shown that 9+7 has something to dowith 4, and that

4 is somehow related to 9+7. But it has NOT shown that 9+7 is EQUAL to 4.

The answer to the question is: It doesn't, because it isn't.