Решите:[latex] left { {{ frac{5x}{2}+ frac{y}{5}+4=0} atop { frac{x}{3}+ frac{y}{6}= frac{1}{6}}} ight. [/latex]

[latex] left { {{ frac{5x}{2} + frac{y}{5} +4=0} atop { frac{x}{3} + frac{y}{6}= frac{1}{6} }} ight. left { {{25x+2y+40=0} atop {2x+y=1|*(-2)}} ight. left { {{25x+2y=-40} atop {-4x-2y=-2}} ight. left { {{21x=-42} atop {2x+y=1}} ight. left { {{x=(-42):21} atop {2x+y=1}} ight. [/latex][latex] left { {{x=-2} atop {2*(-2)+y=1}} ight. left { {{x=-2} atop {-4+y=1}} ight. left { {{x=-2} atop {y=1+4}} ight. left { {{x=-2} atop {y=5}} ight. [/latex]