8
15
It is -25 because -15--25 = 10
-17
22
-5
-5
The number is 15.
To find the number that must be subtracted from -5 to get 10, you would set up the equation -5 - x = 10, where x is the unknown number to be subtracted. To solve for x, you would first add 5 to both sides to isolate x, resulting in -x = 15. Then, multiply both sides by -1 to solve for x, giving you x = -15. Therefore, the number that must be subtracted from -5 to get 10 is -15.
15
14
Each number is 15 subtracted from the preceding number.