[tex] \left \{ {{2x-3y=-2} \atop {3x+y=5 | *3}} \right. =\ \textgreater \ \left \{ {{2x-3y=-2} \atop {9x+3y=15}} \right. =\ \textgreater \ \left \{ {{2x=-2} \atop {9x=15}} \right. [/tex] ->11x=13 | : 11 -> x=[tex] \frac{13}{11} [/tex] acum inlocuim in a doua ecuatie pentru a afla cat este y-> 3x+y=5 -> [tex] \frac{39}{11} [/tex] + y =5 -> y= 5 - [tex] \frac{39}{11} [/tex] . pe 5 il amplificam cu 11 ,pt a avea acelas numitor cu cel al fractie 39/11. -> y= [tex] \frac{55}{11} - \frac{39}{11} [/tex] = [tex] \frac{16}{11} [/tex]
