Answer:
15-2x.
Step-by-step explanation:
Let the number be x that needs to be subtracted.
The twice of a number = 2x.
15 is decreased by twice a number
Hence, subtract 2x from 15 i.e, 15-2x
As given according to the question,
The equation will be written as
15-2x
Thus, the answer is 15-2x.
