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        1. }ĿώُIbWһͯ(ji)ӕNЦĘ͐ăɷNɷNărͬͬһNĚrͬڕҪُI˵ÿ4򣩣ÿrDʾ
          1ЦĘĆ΃rxԪՈúxĴ(sh)ʽʾڢڢĿr񣻣Ҫ󻯺ڈDУ
          2ڢĿrXȵڢĿrX2Ԫ@ɷNĚĆ΃r

          𰸡
          1⣺ЦĘĆ΃rxԪtĚĆ΃rǣ143xԪ(j)}

          ڢĿrǣx+3143x=x+429x=428xԪ

          ڢĿrǣ2x+2143x=2x+286x=284xԪ


          2⣺}428x=284x2

          x=4

          143x=2

          ЦĘĆ΃r4ԪĚĆ΃r2Ԫ


          1ЦĘĆ΃rxԪɵڢĿrX14ԪóĚĆ΃rǣ143xԪ(j)ÿĿrX=ЦĘărX+ĚărXڢڢĿr2(j)ڢĿrXȵڢĿrX2Ԫг̣̼ⷽɣ

          ϵд
          P(gun)}

          ĿД(sh)W Դ

          }Ŀȥ̖_()

          A. x2-(3x-2)=x2-3x-2

          B. 7a+(5b-1)=7a+5b+1

          C. 2m2-(3m+5)=2m2-3m-5

          D. -(a-b)+(ab-1)=a-b+ab-1

          鿴𰸺ͽ>>

          ĿД(sh)W Դ

          }ĿDOİ돽ODABcCBY(ji)AOLOcEBY(ji)ECAB=8CD=2ECL

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          ĿД(sh)W Դ

          }Ŀ֪ABCУA=50

          1DABCACBĽƽ־cOtBOC=

          2DABCACBȷ־քeO1O2tBO2C=

          3DABCACBnȷ־քeO1O2On1(ni)n1cBOn1CnĴ(sh)ʽʾ

          4D֪ABCACBnȷ־քeO1O2On1BOn1C=60

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          ĿД(sh)W Դ

          }Ŀijξc·ݹӴο25f˴·ݹӴο64f˴ΣO(sh)ÿµƽLʞxtз̞飨
          A.251+x2=64
          B.25+251+x2=64
          C.251+2x=64
          D.641x2=25

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          ĿД(sh)W Դ

          }ĿиMܽMεǣ

          A. 2cm3cm5cm B. 5cm6cm10cm

          C. 1cm1cm3cm D. 3cm4cm8cm

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          ĿД(sh)W Դ

          }ĿD1cOֱABһc^cO侀OCʹBOC=120һ30ȽǵֱǰֱccO̎һ߅OM侀OBһ߅ONֱAB·DСOMN=30㣬NOM=90㣩
          1D1еǰ@cOrD(zhun)D2ʹOMڡBOCă(ni)ǡƽ֡BOCֱONǷƽ֡AOCՈf
          2D1еǰ@cOÿ6ٶrᘷD(zhun)һܣD(zhun)^trֱONǡƽJǡAOCt
          3D1еǰ@cO형rD(zhun)D3ʹONڡAOCă(ni)Ո?zh)AOMcNOC֮gĔ(sh)P(gun)ϵfɣ

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          ĿД(sh)W Դ

          }Ŀ֪4y2+my+1ȫƽʽt(sh)mֵ_________

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          ĿД(sh)W Դ

          }Ŀijl(xing)(zhn)I(y)a(chn)мg(sh)15a(chn)˺ƶa(chn)Ʒÿa(chn)~y(tng)Ӌ@15ijµļӹ(sh)

          ÿ˼ӹ(sh)

          540

          450

          300

          240

          210

          120

          ˔(sh)

          1

          1

          2

          6

          3

          2

          (1)@15ԓ¼ӹ(sh)ƽ(sh)λ(sh)ͱ(sh)

          (2)a(chn)ؓ؟˰ÿλ˵¼ӹ(sh)260J@~Ƿʲô

          鿴𰸺ͽ>>

          ͬԴ