x-1/2(x+1)>=10

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x-1/2(x+1)>=10

x-1/2(x+1)>=10
x-1/2(x+1)>=10

x-1/2(x+1)>=10
x-1/2(x+1)>=10
x-1/2x-1/2>=10
0.5x>=10.5
x>=21

你是指的这样回答么?
x-1/2(x+1)>=10
2X-X-1>=20
X>=21