What is 398/472 in lowest terms?

Me what is the value of x? showing work would be appreciated - ! : )

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1