[tex] \left \{ {{y-x=1} \atop {5x+y=6}} \right. [/tex]⇒[tex] \left \{ {{y=x+1} \atop {5x+x+1=6}} \right. [/tex]⇒ [tex] \left \{ {{y=x+1} \atop {6x=5}} \right. [/tex] ⇒ [tex] \left \{ {{y= \frac{5}{6} +1} \atop {x= \frac{5}{6} }} \right. [/tex] ⇒ [tex] \left \{ {{x= \frac{5}{6} } \atop {y= \frac{11}{6} }} \right. [/tex]
Sper ca te-am ajutat.
