Answer:
1, 11x + 3y + 15z
2, 3x + 12y + -5z
Step-by-step explanation:
all you need to do is combined the like terms and make sure the signs (<em>positive and negative signs</em>) are right
She could donate extra forks utensils and also donate spoon utensils and she will have the exact number of utensils as the knives