x-3/2+y-2/3=4 x-3/2-y-2/3=2 用加减消元法解方程组

x-3/2+y-2/3=4 (1)x-3/2-y-2/3=2 (2)(1)+(2) 得,2x - 2*3/2 -2 *2/3 =6;x =31/6;(1)-(2) 得,2y =2;y=1;