Question

15 decreased by twice a number

Answer 1

15-2n you are welcome

Answer 2

15-2x.

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.