Question

45 + n= 9( 8n+ 5) – 3n

Answer 1

45+n=72n+45-3n
45-45=72n-3n-n
0=68n
n=0

Therefore, n=0

Answer 2

45+n = 9 (8n+5)-3n

or, 45+n = 72n+45-3n

or, 45-45=72n-4n

or, 68n=0

or, n=0