x/3-1＞2m;
x-3＞6m;
x＞6m+3;
2x-m≥6;
2x≥6+m;
x≥(6+m)/2;
∴6m+3≥(6+m)/2;
12m+6≥6+m;
11m≥0;
∴m≥0;
如果本題有什么不明白可以追問(wèn),如果滿意記得采納
如果有其他問(wèn)題請(qǐng)采納本題后另發(fā)點(diǎn)擊向我求助,答題不易,請(qǐng)諒解,謝謝.
祝學(xué)習(xí)進(jìn)步