Equation

  The common denominator is 6. Multiple both sides by 6.

2 +  
3x + 5   
2
 =  
5x + 1   
3

(6)2 +  (6)
3x + 5   
2
 =  (6)
5x + 1   
3

12 +3(3x + 5) = 2(5x + 1)

12 + 9x + 15 = 10x + 2

27 - 2 = 10x -9x

25 = x
return