Question

What raitonal number should be subtracted from the sum of 3/4 and-4/7 to get 13/21​

Answer 1

Answer:

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

LCM=28

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

37/28-x=13/21

-x= 13/21-37/28

-x=52/84-111/84

x=59/84 Ans.