SOLUTION: 3/a _______ 1/a - 1/3a please help me with this one

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Question 82809This question is from textbook Algebra 1
: 3/a
_______
1/a - 1/3a

please help me with this one This question is from textbook Algebra 1

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
%283%2Fa%29
---------
1%2Fa+-+1%2F%283a%29
:
%283%2Fa%29
--------- put the denominator fractions over a common denominator
%28%283+-+1%29%29%2F%283a%29
:
%283%2Fa%29
---------
%282%29%2F%283a%29
:
Invert the dividing fraction and multiply:
3%2Fa * %283a%29%2F2
:
cancel out a and you have:
3 * 3%2F2 = 9%2F2
:
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