馃挏
2x+3x=y
y=20
(4,20)
-3x-y=21
x=-1
(-1,-18)
4(x-3)=21+y
x=y
(11,11)
?讘讗讬讝讜 讻讬转讛 诇诪讚谞讜 讘讬诪讬 讞诪讬砖讬
讟讜专拽讬讝
6x+2y=42
x=2y
(6,3)
x+2y=70
x=5y
(50,10)
2x-3y=-33
x=-4y
(-12,3)
?讗讬诇讜 谞讜砖讗讬诐 诇诪讚谞讜 讘讙讬讗讜诪讟专讬讛
讝讜讜讬讜转 讘讬谉 诪拽讘讬诇讬诐
讞驻讬驻转 诪砖讜诇砖讬诐
讚诪讬讜谉 诪砖讜诇砖讬诐
诪砖驻讟 驻讬转讙讜专住
5x+y=28
y=x+4
(4,8)
x+5y=46
x=y+10
(16,6)
12x+y=50
x=y+2
(4,2)
?讘讗讬讝讛 谞讜砖讗 讛讬讛 讛转专讙讜诇 讛专讗砖讜谉 讛砖谞讛
讝讜讜讬讜转
x+y=5
x-y=7
(6,-1)
3x+4y=13
x-1/3=0
(1/3,3)
8x-y=-12
-8x+2y=32
(1,20)
?讻诪讛 砖讬注讜专讬诐 诪转讞讬诇转 讛砖谞讛 讛讬讜 诇谞讜, 讻讜诇诇 讛讬讜诐
102