For this, let's have:
n represent each number, the number after it is its place in sequence
/ means divide
n1 /2 = n2, etc.
        
             
        
        
        
In multiplication, a negative times a positive has a negative answer. if both are positive or both are negative, the answer is positive. 
5 * -5 = -25
-5* -5 = 25
in divisions say you have
 -5/5 = -1
-5/-5= 1
5/-5= -1
in addition and subtraction, subtracting a negative means to add the two numbers. adding a negative means to subtract the second number.
5+ (-5) = 0
5- (-5) = 10
        
                    
             
        
        
        
Answer:
36
Step-by-step explanation: