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Mathematics 14 Online
OpenStudy (anonymous):

closed

OpenStudy (anonymous):

OpenStudy (anonymous):

and we want to express it as a single fully simplified fraction (i'm assuming) ?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

\[\frac{3}{x} -\frac{3}{x+1} + \frac{3}{x+2}\] we want a common denominator in this case the common denominator will be x(x+1)(x+2) as it is the lowest common multiple of the initial denominators lets do it term by term: \[\frac{3}{x} = \frac{3(x+1)(x+2)}{x(x+1)(x+2)}\] \[\frac{3}{x+1} = \frac{3x(x+2)}{x(x+1)(x+2)}\] \[\frac{3}{x+2} = \frac{3x(x+1)}{x(x+1)(x+2)}\]

OpenStudy (anonymous):

yes thank you

OpenStudy (anonymous):

so we have: \[\frac{3}{x} + \frac{3}{x+1} + \frac{3}{x+2} = \frac{3(x+1)(x+2)}{x(x+1)(x+2)} + \frac{3x(x+2)}{x(x+1)(x+2)} + \frac{3x(x+1)}{x(x+1)(x+2)}\]

OpenStudy (anonymous):

now you can add them

OpenStudy (anonymous):

phew that typing was a mission

OpenStudy (anonymous):

yes it was lol but thank you so much i needed this help

OpenStudy (anonymous):

its fine :)

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