Probability first song is country is 3/7
probability second song is reggae is 2/6 which reduces to 1/3
probability of both is : 3/7 * 1/3 = 3/21 which reduces to 1/7 <==
        
             
        
        
        
Answer:
14/45
Step-by-step explanation:
So we have the fraction:

We can do this algebraically. Follow to following steps: 
Let's let this number equal to n. Thus: 

Since there is only 1 digit repeating, let's multiply everything by 10. So: 

Now, subtract n from both sides: 

On the left, substitute the number for n. On the right, combine like terms: 

All of the 1s will cancel. So: 

Subtract: 

Divide both sides by 9: 

Remove the decimal by multiplying both sides by 10: 

Reduce: 

And we're done!
Use a calculator to check: 

 
        
             
        
        
        
In a - 3 = 15, the value of a HAS to be 18.
In a - 3 is greater than or equal to 15, the value of a is any value that is 18 or higher.