Make them into improper fractions
(5*5)+3
(2*3)+2
Final fractions 
28/5+8/3
Find a common denominator 
Multiply 28/5 by 3
84/15
Multiply 8/3 by 5
40/15
Add - 84+40=124
        
                    
             
        
        
        
The answer would be -15      
this is my work
3*-6 to -18 (7-4-18)
        
                    
             
        
        
        
<4= 150
<6=150
because the angels are parallel <4 & <2 are the exact same measurements and because 6 is perpendicular to  <4 & <2 thus making it also 150 degrees
 
        
             
        
        
        
Line segment of length k is divided into 3 equal parts.
so first segment is 0-k/3 and third segment is 2/3k-k
so mid-pt of 1st = k/6 and 3rd = 5/6k
so the distance in between = 5/6k-k/6 = 4/6k = 2/3k