Loga x=n ⇔ a^n=x
log₇ 21=x
x=log ₇ 21
x=ln 21 / ln7=1.564575034...
Answer: x=log₇ 21
I know this is not technically answering your question but there is this app called photomath that I'm pretty sure could help u answer this question. hope if u try out the app it works for you.....
Answer:
1x-72
Step-by-step explanation:
-36x2= -72
6x-72/6x
6x/6x=1x
1x-72
All you have to do is use a caculater