Question

Va rog, coronita si 50 puncte. Rezolvati prin metoda reducerii sistemului de ecuatii​

Answer 1

2x-3y=15

2x+y=3

2x-3y=15

y=3-2x

2x-3(3-2x)=15

y=3-2x

2x-9+6x=15

y=3-2x

8x=15+9

y=3-2x

8x=24

y=3-2x

x=3

y=3-2×3

x=3

y=-3

S={(3,-3)}