(2m+x)/2=4
2m+x=8
x=8-2m
(2x-3m)/3-(x-1)/4=6x-1
4(2x-3m)-3(x-1)=12(6x-1)
8x-12m-3x+3=72x-12
67x=15-12m
x=(15-12m)/67
所以8-2m=5*(15-12m)/67
67(8-2m)=5(15-12m)
536-134m=75-60m
74m=461
m=461/74
所以
(2m+x)/2=4
x=8-2m=-165/37
(2x-3m)/3-(x-1)/4=6x-1
x=(15-12m)/67=-33/37