Ответ:

[tex](0.2x - 0.3(2y + 1) = 1.5 \\ (3(x + 1) + 3y = 2y - 2 \\ \\ 0.2x - 0.6y - 0.3 - 1.5 = 0 \\ (3x + 3 + 3y - 2y + 2 = 0 \\ \\ (0.2x - 0.6y - 1.8 = 0 \\ (3x + y + 5 = 0 \\ \\ y = - 3x - 5 \\ 0.2x - 0.6 \times ( - 3x - 5) - 1.8 = 0 \\ 0.2x - 1.8x -3 - 1.8 = 0 \\ -1.6x - 4.8 = 0 \\ -1.6x = 4.8 \\ x = -3\\ y = - 3 \times ( - 3) - 5 \\ y = 4