A new cruise ship line has launched 3 new ship: the pacific, the Caribbean and the island. The Caribbean has 37 more deluxe staterooms than the pacific. the island has 38 fewer deluxe staterooms than twice the number of deluxe stateroom on the pacific. Find the number of deluxe staterooms for each of the ships if the total number of deluxe for the three ships is 447

c = p+37

i = 2p-38
c+p+i = 447

Now just solve for c,p,i using your favorite method.