The formula is 2”6 hope I helped
        
             
        
        
        
Answer:
None of them are correct i believe
Step-by-step explanation:
its sideways lol
 
        
             
        
        
        
Answer:
a. 2.5  
b. 2.333
c. 2.85
Step-by-step explanation:
A) 1. subtract -x on both sides              2. to get 3x-1/2=7   
 3. Add 1/2 on both sides                    4. to get 3x=7.5    
 5. divide 3 on both sides                   6. To get... x=2.5
B)1. Same process.                               2. x+2=13/3        
3. x=13/3-2                                         4. x= 2.33(repeating)
C) 1. same process.                           2. 2x-x/3=3+7/4
3. 2x-x/3=4.75                                  4. Isolate -x/3  
5.-x/3=4.75-2x                                    6. multiply both sides by 3          
7. -x=14.25-6x                                      8. 5x=14.25
9. x= 2.85
* remember to distribute the 3 to each variable.
 
        
             
        
        
        
Multiply 13 by the 2 above the divide line
13*2 = 26
 so the number in the box should be 260