Question

N/6=15/18 and 2(n+1)=3(n-1) are equavalent equations?

Answer 1

n/6=15/8 
n=15*6/8=15*3/4
n=45/4

2(n+1)=3(n-1)
2n+2=3n-3
3n-2n=2+3
n=5 
 
are not equivalent cause 5≠ 45/4