Question

find m . please fast​

Answer 1

Answer:

$( { \frac{4}{5} })^{3m + 1} \times ({ \frac{4}{5} })^{ - 15} = ( { \frac{4}{5} })^{m} \\ \\ ( { \frac{4}{5} })^{3m + 1 - 15} = ( { \frac{4}{5} })^{m} \\ \\ so \: \: \: \: \: \: \: 3m + 1 - 15 = m \\ 2m = 14 \\ m = 7$