Solve the pair of equations : 
\frac{2}{x}+\frac{3}{y} = 11 , \frac{5}{x}-\frac{4}{y} = -7
 Hence, find the value of  5x -3y .

 

 
 
 
 
 

Answers (1)
S safeer

\\ \frac{2}{x}+\frac{3}{y}=11 ...(i)\\\\ \frac{5}{x}-\frac{4}{y}=-7.....(ii) \\\\ 5 \times \text { Equation (i)} - 2 \times $Equation (ii)$\\ \frac{10}{x}+\frac{15}{y}- \frac{10}{x}+\frac{8}{y}=55 + 14 \\\\ \frac{23}{y} =69 \\ y=\frac{1}{3} \ \ \ x =1 \\\\ 5 x-3 y=4

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