To solve this problem just do the following,
x+9=-12
-9 -9
x=-21
Check
-21+9=-12 = True
Hope this helps!=)
Answer:
Sheldon have left
of food.
Step-by-step explanation:
Quantity of food =
kg
Quantity used on strawberry plant = 
Quantity used on tomato plant = 
Food left = Total - used on strawberry - used on tomato
Food left = 
Food left = 
Food left = 
Therefore,
Sheldon have left
of food.
To find the number of wrappers he needs, divide 360 by 40. This is your answer. 360/40 = 9
Answer:
11
Step-by-step explanation:
add 30 then 42 then 18 and divide it in to as many possible