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solve system by elimination
9x-3y=3
3x+8y=-17

Sagot :

luana
[tex] \left \{ {{9x-3y=3} \atop {3x+8y=-17\ \ |*(-3)}} \right. \\\\ \left \{ {{9x-3y=3} \atop {-9x-24y=51}} \right. \\+----\\addition\ method\\\\ -27y=54\ \ \ | divide\ by\ -27\\ y=-\frac{54}{27}\\ x=\frac{-17-8y}{3}=\frac{-17-8*(-\frac{54}{27})}{3}=-\frac{1}{3}[/tex]
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