4x-3y=7 ①
(x-1)/3=(2y+3)/4 ②
②两边乘以12,得
4(x-1)=3(2y+3)
4x-6y=13 ③
①-③,得
3y=-6
y=-2
代入①中,得
x=1/4
x=1/4
y=-2