add:5m(3-n)and 6m-13n
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5m(3-n)+6m-13n
=> 15m-5n+6m-13n
=> 15m-6m+5n-13n=0
=> 9m= -8n
=> m/n=-8/9
Hope this may help you out.........
Answered by
0
Answer:
-8/9 is correct answer.
✌️____abhi____✌️
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