Question

3题，要过程，急急，给好评

Answer 1

去分母
8(x - y) - 3(x + y) = -1 => 5x -11y = -1;
3(x + y) - 2(2x - y) = 3 => 5y - x = 3;
可得 25 y - 5x + 5x - 11y = 3 * 5 - 1 = 14;
可得 y = 1; 带入 5y - x = 3 可得 x = 2;
最后值：x = 2; y = 1;