Question

ПОМОГИТЕ ПОЖАЛУЙСТА дам 90 баллов

Answer 1

$a)\ \ \left\{\begin{array}{l}x+y=2\\3x-y=2\end{array}\right\ \ \ \ \ \ \ \ \ \ \ Otvet:\ A(1;1)\ .\\\\\\b)\ \ \left\{\begin{array}{l}x-y=-4\\2x+5y=6\end{array}\right\ \ \ \ \ \ \ \ \ Otvet:\ B(-2;-2)\ .\\\\\\c)\ \ \left\{\begin{array}{l}x+3y=0\\0,5x-y=2,5\end{array}\right\ \ \ \ \ Otvet:\ C(\, 3\, ;-1\, )\ .\\\\\\d)\ \ \left\{\begin{array}{l}3x+2y=-7\\x-y=0\end{array}\right\ \ \ \ \ \ \ Otvet:\ D(-\frac{7}{5}\ ;\ -\frac{7}{5})\ .$