Answer:
im not sure if this answer is correct but i think its 22
X + x + 165 = 1315
2x + 165 = 1315
subtract 165 from both sides
2x = 1150
divide both sides by 2
x = 575
January 575
February 575 + 165 = 740
(s + 3t) * (2s - 2t) = 2s^2 - 2st + 6ts - 6t^2
Well a interger is any negative number so -1 or -2 or -3 or -4......
