Question

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

Answer 1

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

Answer 2

$9n -7 = 5n + 5$ 

$9n=5n+5+7$ 

$9n=5n+12$ 

$9n-5n=12$ 

$4n=12$ 

$n=12/4$ 

$n=3$