4x+2m-1=3x
x=-2m+1
3y+2m=6y+1
3y=1-2m
y=(1-2m)/3
解大4
(-2m+1)-(1-2m)/3=4
两边乘3
-6m+3-1+2m=12
4m=-10
m=-5/2
x=-2m+1=6
y=(1-2m)/3=2