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OpenStudy (anonymous):
OpenStudy (freckles):
you can multiply first fraction by a/a
and multiply second fraction by b/b
and that way you will have the same denominator
OpenStudy (freckles):
then you will be able to combine the fractions
OpenStudy (anonymous):
i know the common denominator is abc
OpenStudy (anonymous):
im confused about how to find the numerator
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OpenStudy (freckles):
well did you multiply the fractions by what I have asked you to?
and if so what do you have so far?
OpenStudy (anonymous):
|dw:1436972905311:dw|
OpenStudy (freckles):
\[\frac{3a}{bc} \cdot \frac{a}{a}=\frac{3a(a)}{bc(a)}=\frac{?}{abc} \\ \frac{2b}{ac} \cdot \frac{b}{b} =\frac{2b(b)}{ac(b)}=\frac{?}{abc}\]
but you should have a plus between the two numerator terms
OpenStudy (freckles):
and yes 3a(a)=3a^2
and yes 2b(b)=2b^2
\[\frac{3a}{bc}+\frac{2b}{ac} \\ \frac{3a(a)}{bc(a)}+\frac{2b(b)}{ac(b)} \\ \frac{3a^2}{abc}+\frac{2b^2}{abc} \\ \frac{3a^2+2b^2}{abc}\]
OpenStudy (anonymous):
oh sorry i forgot to put it there
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OpenStudy (freckles):
but that is all
you cannot go any further you are done