Answer:
 ans is x=3
Step-by-step explanation:
 
        
             
        
        
        
10 1/3= 31/3
31/3= 93/9
11 5/9= 104/9
93/9 + 104/9 = 197/9
197/9= 21 8/9
your answer is 21 & 8/9
Good Luck
XD
        
             
        
        
        
Answer:
2
Step-by-step explanation:
You would replace the x with -2x so you would end up with -2×-2 and that is 4 then minus 2 is 2. 
 
        
             
        
        
        
8.8 because you need to multiply 1.68 by 10 which is 16.8-8=8.8