Respuesta :

Answer: x = 8

Step-by-step explanation:

DG = 10

(x + 1) + (2x - 15) = DG

so;

x + 1 + 2x - 15 = 10

3x - 14 = 10

3x = 10 + 14

3x = 24

x = 24/3

x = 8