14+ 13y - 13y = 20y - 13y -21 (taking away the smallest y value from both sides)
14 = 7y - 21
14 + 21 = 7y - 21 +21 (+21 on both sides to remove -21 if we do -14 then we will have nothing on other side)
35 = 7y 
35/7 = 7y/7 (dividing 7 on both sides)
5 = y 
answer is 100% correct no doubts. hope it helped you. 
 
        
             
        
        
        
The range would be -1 to 8
        
             
        
        
        
700 because 10 times 20 is 200 and 500 plus 200 is 700.
        
                    
             
        
        
        
add all the angles and make them equal to 360
88 + 108 + (3x-6) + 2x = 360
196 + 5x -6 = 360
190 + 5x = 360
5x = 170
x = 34 = answer
 
        
             
        
        
        
Answer:
-50y+(-80)
Step-by-step explanation: