Question

please answer this fast. If you don't know the answer then just ignoreee ​ pls somebody answer this one!!!​

Answer 1

Answer:

Option D

$\frac{ {9}^{ - 3m }}{ {9}^{ - 4} } = {9}^{7}$

${9}^{ - 3m - ( - 4)} = {9}^{7}$

${9}^{ - 3m + 4} = {9}^{7}$

$- 3m + 4 = 7$

$- 3m = 7 - 4 = 3$

$m = - 1$