Student 1 and 3.

Move the negative into the brackets,
positive becomes negative while two negatives make a positive.
Answer:
4
Step-by-step explanation:
The plus and minus sign cancel each other out so it becomes 7-3=4
Answer: 12 acres could be planted (at most)
Step-by-step explanation: Since there will be twice as many acres of wheat in comparison to the corn, out of the total 36 acres at least 24 of those will need to be wheat. That leaves 12 acres left for the corn.
Hey there,
All we have to do is 472-21=451
So your number would be 451