Mathematics: Ive been stuck on this question for 20 mins idk : (

Ive been stuck on this question for 20 mins idk :

Ответ:

romet31

13.01.2022

Mathematics

Remember
$\frac{x^m}{x^n}=x^{m-n}$
and
if a^b=a^c

where a=a, then b=c
so
$\frac{7^9}{7^n}=7^{9-n}=7^3$
$7^{9-n}=7^3$
so
9-n=3
-n=-6
n=6

answer is 6

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Ответ:

ciarrap552

22.06.2022

Mathematics

Multiply the bottom you multiply the top with the same number so you will turn 1/2 to 5/10 then you will add ( this is continuing from the 3 dots on the paper
How to add with unlike denominators?

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