Question

Помогите пожалуйста решить уравнение

Answer 1

$\left \{ {{4x-5y=6} \atop {3x+5y=8}} \right. \; \oplus \; \left \{ {{4x-5y=6} \atop {7x=14}} \right. \; \left \{ {{8-5y=6} \atop {x=2}} \right. \; \left \{ {{y=\frac{2}{5}} \atop {x=2}} \right. \\\\x+y=2\frac{2}{5}=2,4$