[latex] left { {{10x+y=-6} atop {-16x-3y=4}} ight. ; left { {{y=-6-10x} atop {-16x-3(-6-10x)=4}} ight. ; left { {{y==-6-10x} atop {14x=-14}} ight. ; left { {{y=-6+10=4} atop {x=-1}} ight. ; o ; (-1,4)[/latex][latex] left { {{2x+y=-11} atop {21x-y=-5}} ight. ; slozim; left { {{23x=-16} atop {2x+y=-11}} ight. ; left { {{x=-frac{16}{23}} atop {-frac{32}{23}+y=-11}} ight. ; left { {{x=-frac{16}{23}} atop {y=-frac{221}{23}=-9frac{14}{23}}} ight. [/latex]