Ответ:
[tex](-2;4)[/tex]
Объяснение:
[tex]\left \{ {{4x-y-24=2(5x-2y)} \atop {3y-2=4-(x-y)}} \right.\\\\\left \{ {{4x-y-24=10x-4y} \atop {3y-2=4-x+y}} \right.\\\\\left \{ {{4x-10x-y+4y=24} \atop {x+3y-y=4+2}} \right.\\\\\left \{ {{-6x+3y=24\; |:3} \atop {x+2y=6}} \right.\\\\\left \{ {{-2x+y=8} \atop {x+2y=6\; |*2}} \right.\\\\\left \{ {{-2x+y=8} \atop {2x+4y=12}} \right.+\\\\5y=20\\y=20:5\\y=4\\\\x+2y=6\\x+2*4=6\\x+8=6\\x=6-8\\x=-2\\\\x=-2;y=4\\\\(-2;4)[/tex]
*** Для решения применяли метод сложения
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Answers & Comments
Ответ:
[tex](-2;4)[/tex]
Объяснение:
[tex]\left \{ {{4x-y-24=2(5x-2y)} \atop {3y-2=4-(x-y)}} \right.\\\\\left \{ {{4x-y-24=10x-4y} \atop {3y-2=4-x+y}} \right.\\\\\left \{ {{4x-10x-y+4y=24} \atop {x+3y-y=4+2}} \right.\\\\\left \{ {{-6x+3y=24\; |:3} \atop {x+2y=6}} \right.\\\\\left \{ {{-2x+y=8} \atop {x+2y=6\; |*2}} \right.\\\\\left \{ {{-2x+y=8} \atop {2x+4y=12}} \right.+\\\\5y=20\\y=20:5\\y=4\\\\x+2y=6\\x+2*4=6\\x+8=6\\x=6-8\\x=-2\\\\x=-2;y=4\\\\(-2;4)[/tex]
*** Для решения применяли метод сложения