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: $(-19;-28)$

Answer 2

можно в письменном виде?