2x+3y-2=0,4x+1-9y=0
4x+6y-4=0,4x+1-9y=0
两式相减得:15y=5 ,y = 1/3
x=(9y-1)/4=1/2
m/2 - n/2=13 ,m/3-n/4=3
m-n=26,m-3n/4=9
两式相减得:
-n/4 = 17
n = -68
m= 26 +n = 26-68= -42
2x+3y-2=0,4x+1-9y=0
4x+6y-4=0,4x+1-9y=0
两式相减得:15y=5 ,y = 1/3
x=(9y-1)/4=1/2
m/2 - n/2=13 ,m/3-n/4=3
m-n=26,m-3n/4=9
两式相减得:
-n/4 = 17
n = -68
m= 26 +n = 26-68= -42