(x+3)/2-(y+5)/3=7
两边乘以6,得
3(x+3)-2(y+5)=7
3x+9-2y-10=7
3x-2y=8.(1)
(x+4)/3-(2y-3)/5=2
两边乘以15,得
5(x+4)-3(2y-3)=2
5x+20-6y+9=2
5x-6y=-27.(2)
(1)*3-(2)得
4x=51
x=51/4
代入(2)得
255/4-6y=-27
6y=363/4
y=121/8
解得
x=51/4
y=121/8