Question

12. Divide the sum of 13/5 and -12/7 by the product of -13/7 and 1/-2.
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Answer 1

unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n. Examples are 1/1, 1/2, 1/3, 1/4 ,1/5, etc.

you are understand n