Answer:
With what?
Step-by-step explanation:
The numbers:
1, -3, 2, -9, 3, -15, 4, -21,
are not linear.
If it was linear:
4, 3, 2, 1, -3, -9, -15, -21
424--------------------------------------------------------
Answer: No solution
Step-by-step explanation: -12x-14=-62-12x
You would have to simplify the -12x but you can't so this would be a no solution.