3(x-1)=y-31 5(y-1)=3(x+5)
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3(x-1)=y-315(y-1)=3(x+5)3(x-1)=y-315(y-1)=3(x+5)3(x-1)=y-315(y-1)=3(x+5)先整理,可以得到2个新式子:3X+28=Y,3X+20=
3(x-1)=y-31 5(y-1)=3(x+5)
3(x-1)=y-31 5(y-1)=3(x+5)
3(x-1)=y-31 5(y-1)=3(x+5)
先整理,可以得到2个新式子:3X+28=Y,3X+20=5Y,分别定为3式,4式,再用4式减去3式得4Y=-8,所以Y=-2,代入得到X=-10
由1式可得:y=3x+28带入2式,则:5(3x+27)=3(x+5),解得x=-10,y=-2
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