Cпростите выражения -
[tex]\frac{x-1}{3x-12}[/tex] - [tex]\frac{x-3}{2x-8}[/tex]
[tex]\frac{x-1}{3x-12}[/tex] - [tex]\frac{x-3}{2x-8}[/tex]
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= (х-1)/3(х-4) - (х-3)/2(х-4) =
=2(х-1)/6(х-4) - 3(х-3)/6(х-4) =
= [2(х-1) - 3(х-3)]/6(х-4) =
= (2х-2-3х+9)/6(х-4) =
= (-х+7)/6(х-4) = -(х-7)/6(х-4)