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\frac{5}{x-1}+\frac{1}{y-2}=2 \quad \text { tai } \frac{6}{x-1}-\frac{3}{y-2}=1 |
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Answer» 5/x-1+1/y-2=2 eq 16/x-1-3/y-2=1 eq 2let 1/x-1=u, 1/y-2=vmultiply eq 1 by 3, we get15u=3v=6 eq 3add eq 2 and 321u=7u=1/3x-1=3x=4b=1/3y-2=3y=5 |
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