Question 470444
i need help understanding this 
solve 9/x+3/x=6/(x-12)
**
 9/x+3/x=6/(x-12
12/x=6/(x-12)
LCD:x(x-12)
12(x-12)=6x
12x-144=6x
6x=144
x=24
Check:
9/24+3/24=6/24-12
12/24=6/12
1/2=1/2