Question

please explain this step ​

Answer 1

Hey mate hope it helps you..

In the first step LCM was taken and 3^k was multiplied by 2.

Next step was taking 3^k common.

then 3.3^k can be written as 3^k+1 because the base are the same .

Answer 2

Step-by-step explanation:

LCM was taken as 3*k and multiplied by 2

Next tak the common

And proceed further