若m=1与2(m+1)互为相反数,则m=___.3(x-7)-2[9-4(2-x)]=224(x-2)-[5(1-2x)-4(5x-1)]=03/2[2/3(x/4-1)-2]-x=2x/2+1=3分之2-x4分之x+3减8分之2-3x=32分之2x-1减2x=12/7(3x+7)=2-3/2y0.2分之x-2减0.5分之x+1=30.02分之0-1x-0
若m=1与2(m+1)互为相反数,则m=___.3(x-7)-2[9-4(2-x)]=224(x-2)-[5(1-2x)-4(5x-1)]=03/2[2/3(x/4-1)-2]-x=2x/2+1=3分之2-x4分之x+3减8分之2-3x=32分之2x-1减2x=12/7(3x+7)=2-3/2y0.2分之x-2减0.5分之x+1=30.02分之0-1x-0.2减0.5分之x+1=3就这几道题,麻烦把步骤写出来,
注:如3/2是指二分之三