• Решите системы уравнений.Напишите полное решение
    [tex] \left \{ {{x-6y=17} \atop {5x+6y=16}} ight. [/tex] 

    [tex] \left \{ {{3x+5y=4} \atop {-3x+y=8}} ight. [/tex]

    [tex] \left \{ {{2x+3y=3} \atop {5x+6y=9}} ight.[/tex]

    [tex] \left \{ {{x-2y=8} \atop {x-3y=6}} ight. [/tex]

Ответы 1

  •   \left \{ {{x-6y=17} \atop {5x+6y=16}} ight.   \left \{ {{x-6y=17} \atop {6x=33}} ight.  \left \{ {{x-6y=17} \atop {x=5}} ight.   \left \{ {{5-6y=17} \atop {x=5}} ight.   \left \{ {{-6y=17-5} \atop {x=5}} ight.   \left \{ {{y=-2} \atop {x=5}} ight.    \left \{ {{3x+5y=4} \atop {-3x+y=8}} ight.   \left \{ {{3x+5y=4} \atop {6y=12}} ight.  \left \{ {{3x+5y=4} \atop {y=2}} ight.\left \{ {{3x+5*2=4} \atop {y=2}} ight.\left \{ {{3x=4-10} \atop {y=2}} ight.\left \{ {{3x=-6} \atop {y=2}} ight.\left \{ {{x=-2} \atop {y=2}} ight. \left \{ {{2x+3y=3} \atop {5x+6y=9}} ight. \left \{ {{2x+3y=3}/-2 \atop {5x+6y=9}} ight.  \left \{ {{-4x-6y=-6} \atop {5x+6y=9}} ight. \left \{ {{-4x-6y=-6} \atop {x=3}} ight. \left \{ {{-4*3-6y=-6} \atop {x=3}} ight. \left \{ {{-6y=-6+12} \atop {x=3}} ight. \left \{ {{-6y=6} \atop {x=3}} ight. \left \{ {{y=-1} \atop {x=3}} ight.   \left \{ {{x-2y=8} \atop {x-3y=6}} ight.  \left \{ {{x-2y=8}/-1 \atop {x-3y=6}} ight.    \left \{ {{-x+2y=-8} \atop {x-3y=6}} ight.   \left \{ {{-x+2y=-8} \atop {-y=-2}} ight.   \left \{ {{-x+2y=-8} \atop {y=2}} ight.  \left \{ {{-x+2*2=-8} \atop {y=2}} ight.  \left \{ {{-x=-8-4} \atop {y=2}} ight.  \left \{ {{-x=-12} \atop {y=2}} ight.  \left \{ {{x=12} \atop {y=2}} ight. Если хотите проверить, просто подставьте значения в системы.
    • Автор:

      wright
    • 5 лет назад
    • 0
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