Question

(N * 3) + 6 - (n * 2) = n + 3 what is value of n

Answer 1

$n\cdot 3+6-n\cdot2=n+3\\ 3n+6-2n=n+3\\ 6=3\\ n\in\emptyset$

Answer 2

(n*3)+6-(n*2)=n+3
3n+6-2n=n+3
3n-2n-n=3-6 every n on the left and free numbers on the right
0=-3
contradiction,  there are no solution