We'Ve got 3 x minus 4 y. ... A x+2y = -2 2x - y = 1 B x + 4y = -2 3x - 8y = 10 C x - 2y = 3 -2x + y = 0 D 2x + y = 9 5x -4y = 3 E 3x - 2y = 5 2x - y = 4 F ...
確定! 回上一頁