question: Andy plants 90 geraniums and 40 fewer petunias that geraniums. How many flowers does he plant total?
answer: First find the number of petunias Andy plants: 90 flowers - 40 = <<90-40=50>>50 flowers
  Then add the number of each kind of flower he plants to find the total number: 50 flowers + 90 flowers = <<50+90=140>>140 flowers
  #### 140