Решить систему уравнений !!!! Срочно !!! Решить систему уравнений { x/2-y/6=1 {x/4+y/3=3

[latex] \left \{ {{ \frac{x}{2}- \frac{y}{6} =1/6} \atop { \frac{x}{4} + \frac{y}{3} =3}/12} \right. [/latex] [latex]3x- y =6} \atop { 3x + 4y =36}} \right. [/latex] [latex]{3x- y =6/-1} \atop { 3x + 4y =36}} \right. [/latex] [latex]{-3x+ y =-6} \atop { 3x + 4y =36}} \right. [/latex] [latex]{-3x+ y =-6} \atop { 5y =30}} \right. [/latex] [latex]{-3x =-12} \atop { y =6}} \right. [/latex] [latex]{x =4} \atop { y =6}} \right. [/latex]