Determine which numbers in each set are solutions to the corresponding equations.
1. n + 3 = 16; {9, 11, 13}
2. 3n = 45; {15, 30, 45}
3. 4n - 14 = 6; { 0, 5,10}
4. 6( n + 2 ) = 23; { 1, 3, 5}
5. 9x - 15 = 5x + 1; { 2, 4, 5}