用简便方法解方程组3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 02:57:20
用简便方法解方程组3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24用简便方法解方程组3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24用简便方法解方程组3(x+y)+

用简便方法解方程组3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24
用简便方法解方程组3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24

用简便方法解方程组3(x+y)+2(x-y)=36,2(x+y)-3(x-y)=24
3(x+y)+2(x-y)=36
5x+y=36 1
2(x+y)-3(x-y)=24
-x+5y=24 2
2*5+1 y+25y=156
y=6
将y=6代入1 5x+6=36
x=6