已知y1=5+X,Y2=-2X+2,当x取何值是,y1≥y2急急急急急~~~~~~~~~急急急急急急~~~~~~~~~

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已知y1=5+X,Y2=-2X+2,当x取何值是,y1≥y2急急急急急~~~~~~~~~急急急急急急~~~~~~~~~
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已知y1=5+X,Y2=-2X+2,当x取何值是,y1≥y2急急急急急~~~~~~~~~急急急急急急~~~~~~~~~
已知y1=5+X,Y2=-2X+2,当x取何值是,y1≥y2
急急急急急~~~~~~~~~急急急急急急~~~~~~~~~

已知y1=5+X,Y2=-2X+2,当x取何值是,y1≥y2急急急急急~~~~~~~~~急急急急急急~~~~~~~~~
y1≥y2
5+x≥2-2x
3x≥-3
x≥-1

X大于等于-1
5+5X大于等于-2X+2