\(\dfrac{x-5}{x-1}+\dfrac{3x+1}{x-1}\)
\(=\dfrac{x-5+3x+1}{x-1}\)
\(=\dfrac{4x-4}{x-1}\)
\(=\dfrac{4(x-1)}{x-1}\)
\(=4\)
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lamloc 
Darling_274 
minhtiendailqa4a3324 