To find the reciprocal of a fraction, you switch the numerator and denominator, for example the reciprocal of 2/5 is 5/2. With our mixed number, we convert to an improper fraction, 17/3Then we find the reciprocal, which is 3/17. I hope this helps! 
 
        
             
        
        
        
Answer:
b<-21
Step-by-step explanation:
1/3b+1<-6
1/3b<-7
*3     *3
b<-21
 
        
                    
             
        
        
        
For number 13 x=70 and y=115 hope this helped
        
                    
             
        
        
        
H is less than or equal to 35
Just simplify each side and solve for the variable.