3分之2(x-y)=4分之x+y-1
6(x+y)=4(2x-y)+16
8(x-y)=3(x+y)-12
6(x+y)=4(2x-y)+16
5x-11y=-12
x=5y-8
5(5y-8)-11y=-12
25y-40-11y=-12
14y=28
y=2
x=2
方程组的解是{x=2 y=2