28+x=3x
x=14
點先可以計到14,,,我要steps
math 28+x=3x
2008-10-03 2:04 am
回答 (4)
2008-10-03 2:58 am
28+x=3x
28+x-x=3x-x
28=2x
28/2=2x/2
x=14
28+x-x=3x-x
28=2x
28/2=2x/2
x=14
2008-10-03 2:22 am
28+x -x= 3x -x sub-x in both to balance
28=2x
28/2=2x/2 both除2 to balance
14=x
28=2x
28/2=2x/2 both除2 to balance
14=x
收錄日期: 2021-04-13 16:07:46
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