Question

what rational number should be subtracted from the sum of 3 /14 and -4/7 to get 13/21?
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Answer 1

Step-by-step explanation:

given

3/4 + -4/7 - x = 13/21

21/28 + -16/28 - = 13/21

5/28 - x = 13/21

x = 5/28 - 13/21