Respuesta :

wegnerkolmp2741o

Answer:

The number is 7

Step-by-step explanation:

Let x be the unknown number

difference is subtraction and is means equals

3 ( x-2) = 15

Divide each side by 3

3/3(x-2) = 15/3

x-2 = 5

Add 2 to each side

x-2+2 = 5+2

x = 7