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Mathematics 13 Online
OpenStudy (anonymous):

add 1/x+3 + 5/x-4

OpenStudy (anonymous):

LCD = (x+3)(x-4) so we write x-4 +5( x+3 ) / (x+3)(x-4) and simplify the top bit

OpenStudy (anonymous):

\[\frac{a}{b}+\frac{c}{d}=\frac{ad+bc}{bd}\]

OpenStudy (anonymous):

don't forget parentheses and distributive law

OpenStudy (anonymous):

6x-11/x^2-x-12

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