hihowareyou0
hihowareyou0
07-01-2015
Mathematics
contestada
SOLVE BY ELIMINATION.
x-2y=2
3x+y=6
Respuesta :
luana
luana
07-01-2015
[tex] \left \{ {{x-2y=2} \atop {3x+y=6\ |\cdot2}} \right. \\\\ \left \{ {{x-2y=2} \atop {6x+2y=12}} \right. \\+-----\\\\7x=14\ \ \ \ |:7\\x=2\\\\2-2y=2\\-2y=2-2\\-2y=0\\y=0\\\\ \left \{ {{y=0} \atop {x=2}} \right. [/tex]
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