SOLUTION: simplify this expression(12)/(7d)-(3)/(14d)

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Question 732181: simplify this expression(12)/(7d)-(3)/(14d)
Found 3 solutions by lynnlo, stanbon, ikleyn:
Answer by lynnlo(4176) About Me  (Show Source):
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
simplify this expression
(12)/(7d)-(3)/(14d)
------
least common denominator: 14d
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Rewrite with the lcd of each fraction:
[12*2)/14d) - (3/14d)
----
Combine the numerators over the lcd:
= [24 + 3]/(14d)
----
= 27/14d
---
Cheers,
Stan H.
==========

Answer by ikleyn(53419) About Me  (Show Source):
You can put this solution on YOUR website!
.
simplify this expression(12)/(7d)-(3)/(14d)
~~~~~~~~~~~~~~~~~~~~~~~~~

      %2812%29%2F%287d%29 - %283%29%2F%2814d%29  --->  write with the common denominator 14d  --->

    = 24%2F%2814d%29 - 3%2F%2814d%29  --->  work with this common denominator  ---> 

    = %2824-3%29%2F%2814d%29 = 21%2F%2814d%29  --->  cancel common factor 7  ---> 

    = 3%2F%282d%29.    ANSWER

Solved.

It is the story on how to do it.