-2x-5y=9
3x+11y=4
solve using elimination
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\(-2x-5y=9\\ y=\frac{2x+9}{-5}=-0.4x-1.8\\ 3x+11y=4\\ y=\frac{-3x+4}{11}\)
\(-0.4x-1.8=\frac{-3x+4}{11}\\ -4.4x-19.8=-3x+4\\ -23.8=1.4x \)
\(x=-17\)
\(y=-0.4x-1.8\\ y=-0.4\cdot(-17)-1.8\)
\(y=5\)
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