Question

Determinati n stiind ca 7la puterea 15- n=7 la puterea 8

Answer 1

$7^{(15-n)}=7^8$

Observam ca bazele sunt egale , deci egalam exponentii

$15-n=8$
$n=15-8$
$n=7$

Answer 2

15-n=7 la a 8
n=15 ₊56
n= 71
Deci.. 
71-15=56