1、初二数学不等式解下列不等式:(1)x175; (2)3;(3)11; (4)(5)3x14; (6)3x1;(7)2(x1)3x; (8)3(x2)5(x2);(5); (6)(7) 1x-1 (8) 2x-13(x-1)(9) 3x-2x5 (10) x-62x(11) 1 (12) 2x752x(13) 12x (14) x(4x1)2(15)103(x6) 1; (16)(x3)12x;(17)x4; (18)4.(19) 1 (20) 0.01x10.02x(21) 1 (22)x31x(23) 5x13(x+1) (24) (25) 22(x+1) (26) x+11(27) (28
2、) 1(29) 2(3+x)3(x+2) (30)(31) (32) +1x3(33) x21x (34) +1(35) +21 (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-73(x1) 5x-13(x+1) +31 (13) 5x-23(x+1) (14) 3x-2x+1x -1 7 x+54x+1 (15) x+35 (16) +12(x1) 3x-18 (17) x-12x (18) 2x+53(x+2) +33 (19) 0.2x0.3x+1 (20) x- 0.5x-10.2 +1(21) 1+2x3+x (22) 2x1 5x4x1 3x1(23) 3(x1)4x2 (24) + + 3(x1)x5(25) (x+3)2 (26) x3(x2)4 x1(27) 52x+16 (28)11x(29) x1 (30) 5x+13(x+1)2x+(31) (32) (33) (34) (35) (36) (37) (38)(39) (40)(41) (42)(43) (44)