已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=20,则x=

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已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=20,则x=已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=20,则x=已知y1=-2/3x+1,y2=1/6x-5,若y1+y

已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=20,则x=
已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=20,则x=

已知y1=-2/3x+1,y2=1/6x-5,若y1+y2=20,则x=
由题意知-2/3x+1+1/6x-5=20
整理得-1/2x=24
x=-48

-2/3x+1 1/6x-5=20
-1/2x=24
x=-48

(-2/3x+1)+(1/6x-5)=20
-1/2x-4=20
x=-48