human
Megan is delivering meals on wheels. Out of her 30 clients, 7 need vegan meals, 8 need kosher meals, and three people need meals that are both vegan and kosher. How many meals does Megan deliver that are neither kosher nor vegan?
assistant
How many meals are vegan and kosher? ** First, add the number of kosher meals to the number of vegan meals: 7 meals + 8 meals = <<7+8=15>>15 meals
How many meals are neither vegan nor kosher? ** Then subtract the three meals that are both kosher and vegan since they got counted twice: 15 meals - 3 meals = <<15-3=12>>12 meals
How many meals are neither kosher nor vegan? ** Finally, subtract that number from the total number of meals to find the number of meals that are neither kosher nor vegan: 30 meals - 12 meals = <<30-12=18>>18 meals
#### 18