Respuesta :
Answer:
d=4
Step-by-step explanation:
5d - 3 +2d = 4d +9
7d-3=4d+9
-4d -4d
3d-3=9
+3 +3
3d=12
divide both sides by 3
d=4
Answer:
d=4
Step-by-step explanation:
5d - 3 +2d = 4d +9
7d-3=4d+9
-4d -4d
3d-3=9
+3 +3
3d=12
divide both sides by 3
d=4