[tex]2x - y = 5 \\ x - 1.5y = 12 \: \: \: \: | \times ( - 2)\\ \\ 2x - y = 5 \\ - 2x + 3y = - 24 \\ \\ 2y = - 19 \\ y = - \frac{19}{2} \\ y = - 9.5 \\ \\ x - 1.5 \times ( - 9.5) = 12 \\ x + 14.25 = 12 \\ x = 12 - 14.25 \\ x = - 2.25 \\ \\ Ответ: \: ( - 2.25 \: ; \: - 9.5)[/tex]