Question

Помогите пожалуйста, решите систему уравнений ​

Answer 1

$\displaystyle \left \{ {{\frac{2x+7y}{4}+\frac{3x-2y}{3}=\frac{2}{3} } \atop {\frac{3x+2y}{2}-\frac{4x-6y}{7}=\frac{39}{14} }} \right. \\\\\left \{ {{x=\frac{4}{9}-\frac{13}{18}y } \atop {\frac{3x+2y}{2}-\frac{4x-6y}{7}=\frac{39}{14} }} \right. \\\\\frac{3(\frac{4}{9}-\frac{13}{18}y)+2y }2}-\frac{4(\frac{4}{9}-\frac{13}{18}y)-6y }{7}=\frac{39}{14}\\ \\y=2\\ \\x=\frac{4}{9}-\frac{13}{18}*2\\ \\x=-1\\ (x,y)=(-1,2)$