{2x/3+3y/4=1/5.1 5x/6-5y/2=2

问题描述:

{2x/3+3y/4=1/5.1 5x/6-5y/2=2

2x/3+3y/4=1/5.1
5x/6-5y/2=2.2
即:
40x+45y=12.3
5x-15y=12.4
3)+4)*3得:
55x=48
x=48/55
y=-28/55