REZOLVAREA SISTEMELOR DE

ECUAŢII PRIN METODA REDUCERII

A realizat eleva clasei a IX-a”B”:Mustea DanielaProfesor:Ceban Tatiana

Rezolvare

9𝑦= 18

൜2𝑥+ 3𝑦= 8𝑦= 2 ൜

2𝑥+ 3∗2 = 8𝑦= 2

൜2𝑥+ 3𝑦= 89𝑦= 18 ൜

2𝑥+ 3𝑦= 8−2𝑥+ 6𝑦= 10

൜2𝑥= 8− 6𝑦= 2 ൜

2𝑥= 2𝑦= 2

൜𝑥= 1𝑦= 2 Raspuns:S={(1;2

)}

REZOLVAŢI SISTEMUL PRIN METODA REDUCERII

Rezolvare൜2𝑥+ 3𝑦= −4/∗33𝑥+ 4𝑦= 7/(−2) ൜

6𝑥+ 9𝑦= −12−6𝑥− 8𝑦= −14 𝑦= −2

൜6𝑥+ 9𝑦= −12𝑦= −2

൜6𝑥− 18 = −12𝑦= −2

൜6𝑥+ 9∗(−2) = −12𝑦= −2

൜𝑥= 1𝑦= −2

Raspuns:S={(1;-2)}

REZOLVAŢI INDEPENDENT SISTEMUL