2x-3y=0,x+2y=3
问题描述:
2x-3y=0,x+2y=3
答
2x-3y=0 (1)
x+2y=3 (2)
(2)×2-(1)
4y+3y=6-0
7y=6
y=6/7
x=3-2y=9/7