If the following interchanges are made i...

If the following interchanges are made in signs and numbers, which equation would be correct?
Interchanges: Signs: + and -
Numbers: 15 and 5

A

14 `×` 3 - 5` div` 15 + 14 = 21

B

4 `xx` 30 - 15 `div` 5 + 12 = 27

C

4 `xx` 30 - 15 `div` 5+ 12 = 21

D

4 `xx` 30 - 15 `div`5+ 4 = 37

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The correct Answer is:

C

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If the following interchanges are made in signs and numbers, which equation would be correct?
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