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Find the point of intersection of the lines 3=6x-y and 3x-2y=24 ?

Sagot :

luana
[tex] \left \{ {{3=6x-y\ \ |*(-2)} \atop {3x-2y=24}} \right. \\\\ \left \{ {{-6=-12x+2y} \atop {24=3x-2y}} \right. \\+----\\add\ both\ equations\\\\ 18=-9x\ \ \ | divide\ by\ -9\\\\ x=-2\\\ y=6x-3=6*(-2)-3=-12-3=-15\\\\ Point\ of\ intersection:\ (-2,-15)[/tex]
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