Respuesta :
Answer:
[tex]60d + 90[/tex]
Step-by-step explanation:
if you are to expand the brackets this would be your result
you can use distributive property so 10*6d = 60d
and then 10*9 = 90
so the final answer is: 60d + 90
and then 10*9 = 90
so the final answer is: 60d + 90