I think Ss mult by 5 on both sides and get 10x-4 = 100, then add 4 and get 10x=104, then divide both sides by 10 leaving them with the fraction 104/10, then they simplify by dividing by 2 over 2 giving us 52/5!
Some students are submitting "52/5" as their answer. It is correct, but what do you think is leading them to answering in fraction form rather than decimal form?