Respuesta :
Answer:
d+9
Step-by-step explanation:
sum implies addition
so you would add d and 9
since d is a variable the most you can simplify is
d+9
Answer:
d+9
Explanation:
You cant combined unlike terms with addition
Answer:
d+9
Step-by-step explanation:
sum implies addition
so you would add d and 9
since d is a variable the most you can simplify is
d+9
Answer:
d+9
Explanation:
You cant combined unlike terms with addition