我给数学学霸跪下了,就帮我解答一下吧,求求你们了,主啊!十点以前回答就采纳! 求急啊数学学霸我跪下了帮帮忙呀
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4. x+1>π/2 2(x+3)>3x+2
2x>π-2① 2x+6>3x+2
-x>-4②
①+②得x>π-6 4>x≥-2
x=-2.-1.0.1.2.3
5、设宿舍有x间,女生有y人
5x+5=y
8(x-1)>y
y<35
解得13/3<x<6
x=5
y=30
看不多清楚
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