当≤m<5时,化简|2m-10|-|m-3|得() 3≤m<5时,化简|2m-10|-|m-3|得()

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当≤m<5时,化简|2m-10|-|m-3|得() 3≤m<5时,化简|2m-10|-|m-3|得()
当≤m<5时,化简|2m-10|-|m-3|得()
3≤m<5时,化简|2m-10|-|m-3|得()

当≤m<5时,化简|2m-10|-|m-3|得() 3≤m<5时,化简|2m-10|-|m-3|得()
是当3≤m<5时吧?
∵3≤m<5
∴2m-10<0,m-3≥0
∴|2m-10|-|m-3|
=-(2m-10)-(m-3)
=-2m+10-m+3
=-3m+10

≤m<5
大于等于几呀