Answer:
25, 26, 27
Step-by-step explanation:
78/3=26, so one number is 26 and the other numbers have to equal 52, so the numbers have to either be 24,25,27,28. 25+27=52,
Add 31 to both sides which will give you
9h = 130
23 + 16 = 39
39 - 16 = 23
the student did not reverse the sum correctly
d=6c it looks like. good luck