SOLUTION: I don't understand the breakdown in how to figure out this problem: 1/3(x+9)-1/4(x-4)=x-8

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Question 657907: I don't understand the breakdown in how to figure out this problem:
1/3(x+9)-1/4(x-4)=x-8
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

%28x%2B9%29%2F3-%28x-4%29%2F4=x-8   |Multiplying thru by 12 so as all denominators = 1

    4(x+9) - 3(x-4) = 12(x-8)  || Solve for x