{x/3+y/4=1 x/3-y/2=1 用加减消元法解方程组
问题描述:
{x/3+y/4=1 x/3-y/2=1 用加减消元法解方程组
答
x/3+y/4=1 ...(1)
x/3-y/2=1 ...(2)
(1)-(2)消去x
得y/4-y/2=1-1=0
y=0
则x=3