Răspuns :
[tex] \binom{ - 2x + 9y = 7}{8x - 5y = 3} \\ \binom{ - 8x + 36y = 28}{8x - 5y = 3} \\ 31y = 31 \\ y = 1 \\ \\ \binom{y = 1}{x = \frac{3 + 5}{8} = 1} [/tex]
[tex] \binom{ - 2x + 9y = 7}{8x - 5y = 3} \\ \binom{ - 8x + 36y = 28}{8x - 5y = 3} \\ 31y = 31 \\ y = 1 \\ \\ \binom{y = 1}{x = \frac{3 + 5}{8} = 1} [/tex]