100
                            5h + 2 + 2h = 23
                            h = 3
                         
                    
                 
            
         
    
        
    
        
            
                
                    
                        
                            300
                            4(y - 2) + y = -13
                            y = -1
                         
                    
                 
            
                
                    
                        
                            300
                            7(4 - t) = -84
                            t = 16
                         
                    
                 
            
                
                    
                        
                            300
                            3a + 12 - 6a = -9
                            a = 7
                         
                    
                 
            
         
    
        
            
                
                    
                        
                            400
                            -6(m + 1) + 18 = 24
                            m = -2
                         
                    
                 
            
                
                    
                        
                            400
                            -2(x - 9) = -24
                            x = 21
                         
                    
                 
            
                
                    
                        
                            400
                            -6 = -3y + 4 + 5y
                            y = -5 
                         
                    
                 
            
         
    
        
            
                
                    
                        
                            500
                            7k - 8 + 2(k + 12) = 52
                            k = 4
                         
                    
                 
            
                
                    
                        
                            500
                            -13(4 + 2a) = 208
                            a = -10
                         
                    
                 
            
                
                    
                        
                            500
                            78 = 3c + 12 - c + 4
                            c = 31