4(x+y)-3(x-y)=14,x+y/2 + x-y/3=6 用简便方法能解吗?

4(x+y)-3(x-y)=14,x+y/2 + x-y/3=6 用简便方法能解吗?
4(x+y)-3(x-y)=14,x+y/2 + x-y/3=6 用简便方法能解吗?

4(x+y)-3(x-y)=14,x+y/2 + x-y/3=6 用简便方法能解吗?
设x+y/2 =m x-y/3=n
则
8m-9n=14 ①
m+n=6
解得
m=4
n=2
∴x+y/2=4 x+y=8
x-y/3=2 x-y=6
∴x=7
y=1