Question

Решите уравнение 1 уравнение пажажа!

Answer 1

$\left \{ {{\frac{7}{x}=y } \atop {y=\frac{1}{7}x }} \right. \\\\\frac{7}{x} =\frac{x}{7} \\x^{2} =49\\x_1=7\\x_2=-7\\\\y_1=\frac{1}{7} *7=1\\y_2=\frac{1}{7} *(-7)=-1\\\\Otvet: (7;1);(-7;-1).$