SOLUTION: urgent help I TRIED TO WORK IT BUT I DON'T GET IT 5/x-7-2x/3x-21+x/2x-14

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Question 693855: urgent help I TRIED TO WORK IT BUT I DON'T GET IT
5/x-7-2x/3x-21+x/2x-14
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
5/x-7-2x/3x-21+x/2x-14
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5/(x-7) -2x/(3x-21) + x/(2x-14)
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All 3 denominators have a factor of x-7
--> common DEN of 6(x-7)
= 5*6/6(x-7) -2x*2/2(3x-21) + x*3/3(2x-14)
= (30 - 4x + 3x)/(6*(x-7))
= %2830+-+x%29%2F%286x-42%29