I think of a number, multiply by 2, subtract 6 and then divide by 4. If the answer is - 8, what is the original number?

-13

Step-by-step explanation:

you just start from - 8 and work backwards.

so it's - 8 multiply 4 to get - 32, then add 6 to get - 26, then divide 2 to get - 13.

when you check from the beginning with - 13, then it fits and the answer is - 8!