七下一元一次不等式组100题(有答案).docx

《七下一元一次不等式组100题(有答案).docx》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、解不等式不等式组100题1.3(2x+5)<2(4x+6)2.10-4(x-3)≤2(x-2)3.3x-2(9-x)>3(7+2x)-(11-6x)4.2(3x-1)-3(4x+5)≤x-4(x-7)5.2(x-1)-x>3(x-1)-3x+56.3[y-2(y-7)]≤4y7.15-(7+5x)≤2x+(5-3x)8.2(x-4)-3<1-3(x-2)9.2+3(y+1)8≤2-y-3410.0.5x+3(1+0.2x)>0.4x-0.611.2[43x-23x-12]≤34x12.0.04x+0.090.05-0.3+0.2x0.3≥x-5213.7(4-x)-2(4-3x)<-4x14.

2、2+3(y+1)8<3+y-1415.x3+x-12<116.3[x-2(x-2)]>x-3(x-3)17.x+x2+x+13<1+x+8618.43x-41+x<3216x-219.5-x3≥12-2x+1420.3y+13+1<7y-35+2(y-2)1521.x+52-1<3x+2222.2x-5<3xx-22>x323.x2-x3>-12x-3-3x-2>-624.x2+4≤1x-8>2(x+2)25.x-3x-2<42x+13≥x-126.2x+8≤10-4(x-3)x-12-4x+16<127.3x-32-2x+13>x12x-2x+3<128.x-3>1-xx-5>5-x2x-4

3、>x229.4≤3x-2-2<730.2x-1≤x-5≤4-32x31.y-3y-83≤210-y7+132.1+y3y2+1>(1-y-22)(y2+1)33.3x-2<82x-1>234.5-7x≥2x-41-34x-1<0.535.2x<1-x≤x+536.31-x<2(x+9)x-30.5-x+40.2≤-1437.-3x≤04x+7>038.12x-13x+339.2x-5<3xx-22>x340.x2-x3>-12x-3-3x-2>-641.x2+4≤1x-8>2(x+2)42.5x-3≥2x3x-12<443.2x+7>3x-1x-25≥044.1+2x3>x-14

4、x-1<3x-445.-1<-2-3x4<146.2x+1-1≥34+x<747.2x-1≥3(x-2)-2x<448.3x+1>x+32x-142x<650.2x-5≥3(x-1)x3-x-12<151.x<2x+13x-2x-1≤452.x+3>02x-1+3≥3x53.3x+1<2(x+2)-13x≤53x+254.x+13>02x+5≥6(x-1)55.5x-9<3(x-1)1-32x≤12x-156.2x-3≤5x+54x<3x+157.2x+3≤x+6x+22>x+3358.-3x-2≤4-x1+2x3>x-159.4x-3<5xx-42+x+26≤1360.

5、12x+4<2x-3x-1>561.x-1+3x2>-35x-12≤2(4x-3)62.1-2(x-1)≤53x-22x+11-3x-1≤8-x64.5x+2>3(x-1)7-32x≥12x-165.2x+205x+12+1≥2x-134.56-3x≤16x+52x+19-9x>5[x-2(x-3)]5.3x-2≤x+65x-22+1>x6.2x+2≥3x+3x-13-x+42<-27.5x+3(x-2)≤101+3x2>x-18

6、.x-24+2≥x1-3x-2<9-x9.5x-2>3(x+1)12x-1≤7-32x10.4x-10<05x+2>3x11-2x≥1+3x11.2x-13-5x+12≤15x-1<3(x+1)12.2x-3<1x-12+2≥-x13.3x-2+4<5xx-12-x≥3x+114.x-3(x-2)≥42x-152x-135-2x-3≤x-116.5x-2<3x+4x+83>-x17.10-4(x-3)≥2(x-1)x-1>1-2x318.5x-2<3(x+1)x-22≤2x+3319.31-x>2(x+9)x-30.5-x+40.2≤-1420.2-x>05x+12+

7、1≥2x-1321.-3x+1-x-3<82x+13-1-x2≤122.5x-2≤3(x+1)12x-1≤7+32x23.1-x+12≤x+2xx+1>x(x+3)24.2x-13-5x+12≤15x-1<3(x+1)25.5x+4<3(x+1)x-12≥2x-1526.2x+7>3x-1x-25≥027.1-2(x-1)≤53x-22