SOLUTION: Thank you very much for the answer Now i have another question can you explain me the process of how this ended up given (25/28)d + 9 = d I have the following

Question 177142: Thank you very much for the answer
Now i have another question
can you explain me the process of how this ended up given (25/28)d + 9 = d
I have the following
d/6+d/12+d/7+5+d/2+4=d I do get where the 9 comes from, but i tried to add that up by using LCD and it did not give 25/28.
Please can you explain me the process...
Thanks as always
Answer by ptaylor(2198) (Show Source): You can put this solution on YOUR website!
d/6+d/12+d/7+5+d/2+4=d LCM is 84, so
14d/84 + 7d/84 + 12d/84 + 5 +42d/84 + 4 =d simplifying
75d/84 + 5 + 4=d
(25/28)d+9=d subtract (25/28)d from each side
9=(28/28)d-(25/28)d or
(3/28)d=9
d=(9*28)/3=84

Does this help???---------------ptaylor
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