SOLUTION: Can you please help me with this fraction problem? 15 5 -----b = --- 16 12

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Question 725423: Can you please help me with this fraction problem?
15 5
-----b = ---
16 12
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
%2815%2F16%29b=5%2F12
Divide both sides by 15%2F16 , which is the same as multiplying times 16%2F15 .
%2815%2F16%29b%2816%2F15%29=%285%2F12%29%2816%2F15%29 --> %2815%2A16%2F16%2F15%29b=5%2A16%2F12%2F15 --> %281%29b=5%2A4%2A4%2F3%2F4%2F3%2F5 --> %281%29b=5%2A4%2A4%2F5%2F4%2F3%2F3 --> %281%29b=%285%2F5%29%2A%284%2F4%29%2A%284%2F3%2F3%29 --> b=%281%29%2A%281%29%2A%284%2F9%29 --> highlight%28b=4%2F9%29

NOTE:
You do not need to write all of
%2815%2F16%29b%2816%2F15%29=%285%2F12%29%2816%2F15%29 --> %2815%2A16%2F16%2F15%29b=5%2A16%2F12%2F15 --> %281%29b=5%2A4%2A4%2F3%2F4%2F3%2F5 --> %281%29b=5%2A4%2A4%2F5%2F4%2F3%2F3 --> %281%29b=%285%2F5%29%2A%284%2F4%29%2A%284%2F3%2F3%29 --> b=%281%29%2A%281%29%2A%284%2F9%29 --> highlight%28b=4%2F9%29
For your teacher, %2815%2F16%29b%2816%2F15%29=%285%2F12%29%2816%2F15%29 --> highlight%28b=4%2F9%29 may be enough.
At most your teacher may want to see some cancelling out of factors that is easy to scribble on paper, but I would not know how to type here.
In any case the crossing out of those factors is not algebra voodoo magic. It is the rearranging to give those (1) factors.