,基本砀专项训线(十四)去指号解一元一次方程解下列一元一次方程:1.5z十2二3(Zz十2)解:5x+2二3x十65x一3x二6一22x一4,口.d2。7z十2(3z一3)二20解:7x十6x一6一207x十6x二20十6ssa-aiinGRuUtoU.COm解:3x一9十2x一1=13v+2x=1+9+15x=11技孝林542(z一2)一3(4z一1)二9触:2x一4一12x十3一92x一12x二9十4一3一10x五10Jinchutou.com5.2(z一2)一5二3(2一z)解:2x一45=6一3x2x十3x二6十4十55x二15二36.1一2(2z十3)二一3(2一z)解:1-4xr一6=一6+3x-4xr-3x=6-1+6-7x=-1工71J撇J门UIOU.COIn72一(4一)二6y一2(y十1)解:24+y=6y一2y一2y-6y+2y=一2-2+4-3y=0E83z一7(z一1)二3一2(z十3)解:3x一7x+7二3一2x一63x一7x十2x二36一72x=一10艺二5Jinchutou.com9.4z十3(2一z)二12一(一4)解:4x+6一3x=12一x+44x一3x十x二12十4一62x二10X二510.(y一2)十1二5一2(2y一1)解;y一2+1=5一4y十2y+4y=5+2+2一15y=8z述775一Jinchutou.com11.3(5z一1)一2(3z十2)一6(z一1)十2解:15x一36x一4=6x一6+215x-6x-6x=一6+2+3+43x=3x=112.(2z一1)十3(4z一7)一5(3z十2)十5二0解:2x一1+12x一2115x一10+5=02x十12x一15x二1+21+10一5一文二27工二一27Jinchutou.com