निम्नलिखित समीकरण निकायों को वज्र गुणन विधि से हल कीजिए : \[ \begin{array}{r} x+8 y=19 \\ 2 x+11...

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निम्नलिखित समीकरण निकायों को वज्र गुणन विधि से हल कीजिए :
\[
\begin{array}{r}
x+8 y=19 \\
2 x+11 y=28
\end{array}
\]
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