0.6x-0.4y=1.1
两边乘10
6x-4y=11 (1)
0.2x-0.45y=2.3
两边乘20
4x-9y=46 (2)
(1)×9-(2)×4
54x-36y-16x+36y=99-184
38x=-85
x=-85/38
y=(6x-11)/4=-116/19