The model represents and equation. What is the solution for this equation? Also please explain how to do this

3x+6=9

Step-by-step explanation:

there is three 3 boxes so i guess it means three

and there are 6 ones so im pretty sure its 6

and on the other side is 9 ones so it's nine? try it

1 1/20

Step-by-step explanation:

¾ / 1 ¼= ¾ / 5/4= ¾ x ⅘ = 12/ 20= ⅗  

⅗ x 1 ¾ = ⅗ x 7/4 = 21/20= 1 1/20

Domonic needs 1 1/20 cups of breadcrumbs when he uses 1 ¾ pounds of ground beef.