Answer:
The value of n is 1
Step-by-step explanation:
Given the expression 
In other to solve for n we have to perform a series of step wise operations as follows
collecting like terms we have


The negative signs will council out on both sides we have

Dividing both sides by 2 we have
n= 

Answer:
The answer is the 2nd box down, 20x⁷
You would circle the 3 in 31, the 9 in 94, and the 1 in 17
To solve this you can subtract and you get 6
the distance between -7 and -1 is 6
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I hope this helped!