I’m failing I’m in 9th Grade, I’m doing several step equations and I’m not fully understanding, if anyone could help me solve this equation, Thank you!! Solve the equation below, combining like terms first

9d+1d-3d=14

To solve this I need to combing the like terms first... I think .

Also if you do help me, which thank you to anyone who does, I need to know how you done it bc I have to show work on paper.

Again thank you to anyone who helps me. I’m just trying to make it through life at this point.

Happy Halloween as well!