2x+3y=5
4x-2y=1
4x+6y=10
4x-2y=1
6y-(-2y)=10-1
8y=9
y=9/8
x=(1+2y)/4=(1+2*9/8)/4=13/16
{2x+3y=5 {4x-2y=1 方程要用加减消元法
{2x+3y=5 {4x-2y=1 方程要用加减消元法
数学人气：671 ℃时间：2019-11-06 05:35:51
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