SOLUTION: what does n= ? n+4=21-7

Algebra ->  Exponents -> SOLUTION: what does n= ? n+4=21-7       Log On


   

Question 595847: what does n= ?
n+4=21-7
Found 2 solutions by mamiya, Alan3354:
Answer by mamiya(56) About Me  (Show Source):
You can put this solution on YOUR website!
n-4 = 21-7 --> n - 4 +4 = 21-7 +4
--> n = 14+4
-- > n = 18
so n=18

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
what does n= ?
n+4=21-7
----------
n+4 = 14
Subtract 4
n = 10