Answer:
[tex]\huge\boxed{\sf d = 1}[/tex]
Step-by-step explanation:
10d - 6d = 4
Take d common
d (10 - 6) = 4
d (4) = 4
4d = 4
Divide both sides by 4
d = 1
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
