Question

Divide the sum of 5/21 and 4/7 by their difference.

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Answer 1

Answer:

$sum = 5 \div 21 + 4 \div 7$

$sum = 9 \div 21$

$difference = 5 \div 21 - 4 \div 7 \\ - 1 \div 2$

division = 9/21divided by -1/2

9/21*-2/1

-18/21

-6/7