This way of solving equations is what I learnt when I was working with IGCSE students. Converting word problems to equations is a universal headache among students! But if we go step by step, baby steps, then the pattern becomes clear.
You can use the answer for self-check or correct the work yourself.
The aspect of self-check is to move students towards independent learning and give the teacher’s correction work a break. Hope you and your class likes it!
Do leave a review and feedback if you use it. What is good and what is missing? How did the students fare in it?