Please help me I need help

Answer:
Hello!!
When you solve an equation, you must do the same thing to both sides of the equal sign.
[tex]\frac{x}{3} =5[/tex]
Enter the number that belongs in the green box
[tex]3[/tex] × [tex]\frac{x}{3} =5[/tex] × [tex][?][/tex]
The number which belongs in the green box is [tex]3[/tex]
Hope this helps!!