Answer:
The middle between two numbers is the average of those numbers. So we add those two numbers together and divide by two. And the answer is (1 + 6) / 2 = 3.5
Answer:

Step-by-step explanation:

Just take the answer of the subtraction problem and add it to the other number for an answer Example h-7=14 14 + 7=21 h=7
Answer:
what is the full question?
Step-by-step explanation:
Answer:
With the increase of the value of a ,the value of the expression 20+a will also increase.
Step-by-step explanation: