The third one is a point with the first equation.
I had to simplify the second equation.
It simplified to,

The second one with the above is didn't go through so I'd say no solution.
Step-by-step explanation:
-2+3-12-2
1+15=16 Answer
hope it helps
Answer:
answer is 1
Step-by-step explanation:
Answer:
n (aub)= n (a)+ n(b)
n (anb) = n (a)-n (b)
only a= n(a)+n(b) -(aub)
n only b= n (a)+n (b)-n (anb)
now solve your self because this formula help to solve
Answer:

Step-by-step explanation:
The equation is: 
(h, k) = center.
