Question

If (m/n)^r-7 = (n/m)^r-3 then find the value of r​

Answer 1

$(m/n)^{r-7}  = (n/m)^{r-3}\\(m/n)^{r-7}  = (m/n)^{(-1)(r-3)} \\Let (m/n) be a.So\\a^{r-7} = a^{-r+3}\\r-7=-r+3\\2r=10\\r = 5$

Answer 2

Answer:

5

Step-by-step explanation:

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