Question

(9)^-3m ÷ (9)^-4 = (9)^7 find m​

Answer 1

Answer:

m= -1

Step-by-step explanation:

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

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

$- 3m + 4 = 7$

$- 3m = 3$

$m = - 1$