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[tex] \left \{ {{3x+2y=19} \atop {x+5y=15}} \right. [/tex] ⇒\
va rog ajutatima !


Răspuns :

X=15-5y , deci 3(15-5y)+2y=19 → 45 -15y+2y=19 → -13y=19-45→ -26=-13y→ y=2 .....X=15-10→x=5