From the first-degree equations section of my pre-calc book:

1) (8)/(3k-9) - (5)/(k-3) = 4

2) Jason bought two plots of land for a total of $120,000. On the first plot he made a profit of 15%. On the second, he lost 10%. His total profit was $5500. How much did he pay for each piece of land?

Thanks!