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{x-y=2
2x-3y=2 rezolvati in multimea numerelor reale prin metoda substitutiei sistemului de ecuatii


Răspuns :

[tex] \left \{ {{x-y=2} \atop {2x-3y=2}} \right. [/tex]
[tex] \left \{ {{x=2+y} \atop {2(2+y)-3y=2}} \right. [/tex]
[tex] \left \{ {{x=2+y} \atop {-y=-2}} \right. [/tex]
[tex] \left \{ {{x=2+y} \atop {y=2}} \right. [/tex]
[tex] \left \{ {{x=4} \atop {y=2}} \right. [/tex]
S={(2;4)}