How to solve this problem 14-6= 10-6=?

Question part points submissions used suppose that 100 lottery tickets are given out in sequence to the first 100 guests to arrive at a party. of these 100 tickets, only 12 are winning tickets. the generalized pigeonhole principle guarantees that there must be a streak of at least l losing tickets in a row. find l.

For each proportion find the unknown number x 1/5/8=×/15

Ineed to know the answer to this algebra question.