2019中考数学总复习第二轮纵向小专题复习专题8一元一次不等式课件.ppt

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第二轮 纵向小专题复习,专题8 一元一次不等式,1 解不等式:5(x-9)15-6(x-1),解:5x-4515-6x+6,5x+6x15+6+45,11x66,x6.,2 解不等式:,解:3x-2(x-1)6,3x-2x+26,3x-2x6-2,x4.,3 解不等式 ,并写出它的正整数解,解:3(x+1)2(2x+2)-6,3x+34x+4-6,3x-4x4-6-3,-x-5,x5.不等式的正整数解有1,2,3,4,4解不等式5x2(x-8)+10,并将解集在数轴上表示出来,解:5x2x-16+10,5x-2x-16+10,3x-6,x-2. 将解集表示在数轴上如下:,5解不等式 ,并把它的解集在数轴上表示出来,解:3(3x+1)-82(2x-5),9x+3-84x-10,9x-54x-10,5x-5,x-1.将解集表示在数轴上如下:,6解不等式 ,并将解集在数轴上表示出来,解:4(2x-1)3(3x+2)-12,8x-49x+6-12,8x-9x6-12+4,-x-2,x2.将解集表示在数轴上如下:,谢谢!,

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