Question

solve in step by step ​

Answer 1

Answer:

2

Step-by-step explanation:

a^m+a^n=a^(m+n)

3^5x-1+2x+15=3^7x-14

if x=2

then 3^0=1

Answer 2

Step-by-step explanation:

Use identities formula and than by comparing u get the answers