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初二数学不等式
解下列不等式:
(1)x-17<-5; (2)>-3;
(3)>11; (4)>.
(5)3x+1>4; (6)3-x<-1;
(7)2(x+1)<3x; (8)3(x+2)≥5(x-2);
(5)≥;; (6)≤.
(7) —1<x-1 (8) 2x-1≥3(x-1)
(9) 3x-2x<5 (10) x-6>2x
(11) >-1 (12) 2x-7>5-2x
(13) >1-2x (14) x-(4x-1)≤2
(15)10-3(x+6) ≤1; (16)(x-3)<1-2x;;
(17)x>4-; (18)-4<-.
(19) +1≥ (20) 0.01x-1≤0.02x
(21) -≤1 (22)x+3≥1-x
(23) 5x-1<3(x+1) (24) ->-
(25) -2>2(x+1) (26) x++>11
(27) ≤- (28) - ≥1
(29) 2(-3+x)>3(x+2) (30)≥
(31) < (32) +1>x-3
(33) x-2<1-x (34) -+≤-1
(35) -+2≤-1 (36) ->-1
初二数学不等式组
解下列不等式组:
(1) (2)
(3) (4)
(5) (6)
(7) (8)
(9) (10)
(11) -≤1 (12) 2x-7<3(x-1)
5x-1<3(x+1) +3≥1-
(13) 5x-2<3(x+1) (14) 3x-2<x+1
x -1 ≥7- x+5>4x+1
(15) x+3<5 (16) +1<2(x-1)
3x-1>8 >
(17) x-1>2x (18) 2x+5<3(x+2)
+3<-3 <
(19) 0.2x>0.3x+1 (20) x-≤
0.5x-1<0.2 +>-1
ﻩ
(21) 1+2x>3+x (22) 2-x≤-1
5x≤4x-1 3<x-1
(23) 3(x-1)<4x-2 (24) + ≤-+
-> 3(x-1)<x-5
(25) (x+3)<2 (26) x-3(x-2)≥4
ﻩ> >x-1
(27) -5<2x+1<6 (28)-1<1-x<
(29) -x<1 (30) 5x+1≥3(x+1)
<-2x+ >
(31) (32)
(33) (34) .
(35) (36)
(37) (38)
(39) (40)
(41) (42)
(43) (44)
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