Rozwiaz uklad rownań { 13x+2y=23 pod spodem { 2x-3y=7 bardzo prosze pilneeee

[latex]egin{cases}13x+2y=23/*3\ 2x-3y=7/*2end{cases}\ \egin{cases}39x+6y=69\ 4x-6y=14end{cases}\--------\43x=83/:43\ \x=frac{83}{43}[/latex] [latex]2*frac{83}{43}-3y=7\ \frac{166}{43}-3y=7\ \-3y=7-frac{166}{43}\ \-3y=frac{301}{43}-frac{166}{43}[/latex] [latex]2*frac{83}{43}-3y=7\ \frac{166}{43}-3y=7\ \-3y=7-frac{166}{43}\ \-3y=frac{301}{43}-frac{166}{43}[/latex] [latex]-3y=frac{135}{43}/*(-frac{1}{3})\ \y=-frac{45}{43}\ \egin{cases}x=frac{83}{43}\ y=-frac{45}{43}end{cases}[/latex]