Is the point on the line

Find two rational expressions that have the difference of 2-n/n-4

Answer this question! 30 points and brainliest!

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?