Question

Find value of m so that

(–3)m- 1 X (–3)5 = (–3)7​

Answer 1

Answer:

The value of m is 1.

Step-by-step explanation:

Given : Expression  

To find : The value of m?

Solution :

Expression  

We know,  

Comparing the power as bases are same,

Therefore, The value of m is 1.

Answer 2

(–3)m- 1 X (–3)5 = (–3)7

-3m-1×-15=-21

-3m×-15=-21+1

45m=-20

m=20/45

m=4/9