3 years ago

I need to know what 9n -7 = 5n + 5

2 answers:

7 0

9n - 7 = 5n + 5 |add 7 to both sides

9n = 5n + 12 |subtract 5n from both sides

4n = 12 |divide both sides by 4

n = 3

Arlecino [84]3 years ago

5 0

$9n -7 = 5n + 5$

$9n=5n+5+7

 
$

$9n=5n+12$

$9n-5n=12$

$4n=12$

$n=12/4$

$n=3$

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