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\begin{array}{l}{\frac{5}{x+y}-\frac{2}{x-y}=-1} \\ {\frac{15}{x+y}+\frac{7}{x-y}=10}\end{array}where x is not equal to 0and y notequal to 0 |
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Answer» 15/(x+y)-6/(x-y)-15/(x+y)-7/(x-y)=-3-10-13/(x-y)=-131/(x-y)=1x-y=15/(x+y)-2=-15/(x+y)=-1+2=1x+y=5x+y+x-y=1+5=62x=6x=3y=2 |
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