Question

помогите,срочно надо :):):):)

Answer 1

$\left \{ {{6(x+3)-5(y+1)=10} \atop {2(x-1)+7(y-1)=16}} \right. \left \{ {{6x+18-5y-5=10} \atop {2x-2+7y-7=16}} \right. \left \{ {{6x-5y=-3} \atop {2x+7y=25}} \right. { {{} \atop {|*(-3)}} \right. \left \{ {{6x-5y=-3} \atop {-6x-21y=-75}} \right. \\ |+ \left \{ {{2x+7y=25} \atop {-26y=-78}} \right. \left \{ {{2x+21=25} \atop {y=3}} \right. \left \{ {{x=2} \atop {y=3}} \right.$
Ответ: $(2;3)$

$\left \{ {{ \frac{x-1}{4} - \frac{y+1}{3}=4 } \atop { \frac{x+3}{2}- \frac{y-2}{3}=2 }} \right. { {{|*12} \atop {|*6}} \right. \left \{ {{3x-3-4y-4=48} \atop {3x+9-2y+4=12}} \right. \left \{ {{3x-4y=55} \atop {3x-2y=-1}} \right. \left \{ {{3x=4y+55} \atop {3x=2y-1}} \right. \left \{ {{3x-2y=-1} \atop {4y+55=2y-1}} \right. \\ \left \{ {{3x+56=-1} \atop {y=-28}} \right. \left \{ {{3x=-57} \atop {y=-28}} \right. \left \{ {{x=-19} \atop {y=-28}} \right.$
Ответ: $(-19;-28)$