(x^2-4)/(x^2-8x+12)*?/(2x^2+11x+14) =1 The Polynomial is?

At a pizza shop 70% of the customers order a pizza 25% of the customers order a salad and 15% of the customers order both a pizza and a salad if s customer is chosen at random what is the probability that he or she orders either a pizza or a salad