Answer:
r = 44
Step-by-step explanation:
12 = r - (34 - 2)
Solve for r
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To solve, we need to isolate r. 
Distribute the negative sign with the numbers within the parenthesis :
12 = r - 34 + 2
Add like terms :
12 = r - 32
Add 32 to both sides :
44 = r
r = 44
 
        
                    
             
        
        
        
Step-by-step explanation:
 let X = speed of slow bicycle rider
2x=speed of fast bicycle rider
3(x+2x)=72
X=8mph(slowest bicycle rider)
2x=16mph(fastest bicycle rider)
 
        
             
        
        
        
Answer:
1/6×12/13
2/13
Step-by-step explanation:
thats the answer