Respuesta :
Answer is C. 7/12 has the reciprocal of 12/7. When You multiply by a reciprocal, you just switch the numerator and denominator. The answer does NOT become negative. It would change the fraction itself.
Example:
3/6= 6/3
5/7= 7/5
Example:
3/6= 6/3
5/7= 7/5
The reciprocal of 7/12 is 12/7. In fractions you flop the fractions. So your answer would C 12/7. Hope this helps