Respuesta :

Answer:

39

Step-by-step explanation:

DGM and YGR are vertical angles so set them equal to each other and once you have d, substitute it into DGM

8716566

Answer:

39

Step-by-step explanation:

2d+33=6d+21

subtract 33 from both sides and simplify

2d=6d-12

subtract 6d from both sides and simplify

-4d=-12

simplify

d=3

Substitute 3 as d back into the equation for angle DGM

6(3)+21=39