Question

if (7m+4n) / (7m-4n) = 13, find the value of m/n​

Answer 1

Answer is m/n = –2/3

Step-by-step explanation:

7m+4n) / (7m-4n) = 13

7m+4n = 13(7m–4n)

7m+4n = 91m – 52n

7m – 91m = –52n – 4n

84m = –56n

m/n = –56/84

m/n = –4/6

m/n = –2/3