Simplify: 17-19-{{11-7-4) (A) 6 (C) - 6 (B) - 4 (D) 4
please ans with explanation. answer is not -2
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Answer:
The answer is 12
but if there is line above -7-4 then the answer is 6
cause the line is a twist it is known as bar or vinculum
and you can see video in YouTube related to it
to understand it's function
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