Respuesta :

Answer:

m = -1 and n = -1

Step-by-step explanation:

The formula for this problem is 3^m * 3^n = 3^m+n

so if you have them both equal to -1 it turns out to be:

3^-1 * 3^-1 = 3^-1 + (-1)

therefore it will be equal to...

3^-2