Respuesta :

Answer:

-13+3d

Step-by-step explanation:

(-7-6)+(d+2d) Letters with letters and numbers with numbers.

-13+3d

Answer:

3d - 13.

Step-by-step explanation:

-7 + d - 6 + 2d

= d + 2d - 7 - 6

= 3d - 13

Hope this helps!