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(X+3)÷3+m(x-1)=3 3持ち込んだ後に2m+2=3 M=1/2 /2n+m/=4010 は2n+1/2=4010 N=2004.75 M+N=2005.25 または2n+1/2=4010 N=-2005. M+N=2005.25+0.5=2004.75
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