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AleksandrR [38]
3 years ago
10

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

Mathematics
1 answer:
Svet_ta [14]3 years ago
5 0
\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)
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If EG=19 and FG=12 then EF=?
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