解决方案：2-X / X 3 = 1/2 +1 / X 3 2-X / X的+3-1 / X +3 = 1/2 2-X-1 = X / 2 +3 / 2 />-2X / 3 = 1/2 X = -1 / 3 />测试：左= 7/8 =右∴X = -1 / 3是原方程的解
