Ответ:
решение смотри на фотографии
[tex]\displaystyle \left \{ {{-x+3y=4} \atop {x-2y=1}} \right. \\\\\left \{ {{-x+3y=4} \atop {x=1+2y}} \right.\\ \\-(1+2y)+3y=4\\y=5\\x=1+2*5\\x=11\\(x,y)=(11,5)[/tex]
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Ответ:
решение смотри на фотографии
[tex]\displaystyle \left \{ {{-x+3y=4} \atop {x-2y=1}} \right. \\\\\left \{ {{-x+3y=4} \atop {x=1+2y}} \right.\\ \\-(1+2y)+3y=4\\y=5\\x=1+2*5\\x=11\\(x,y)=(11,5)[/tex]