Bah, okay.
I'm trying to find a common denominator right now for this part of the problem:
Don't I multiply the denominators together? Thus making it?
Now since I can subtract the numerators it means I get 9.
That ends up as the right answer for the exponent of this:
However, in the solution it baffles me because they got the following:
= 12x^8/6-5/6/y^4/3
It looks like they just multiplied it by two, but I didn't think that was how you got a common denominator...
No. If the two denominators are relatively prime, then yes, you would multiply the denominators together. But here, one number is a multiple of another. In that case, the common denominator would simply be the bigger number.
I'm aware of two methods to finding LCD's. This site explains both: How To Find The Least Common Denominator (LCD) .
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