解決方程式

2011-06-30 7:11 am
4(3m over 5)-2m-8=0

回答 (2)

2011-06-30 10:02 am
2011-06-30 7:17 am
4(3m over 5)-2m-8=0
(12m over 5)-2m-8=0
12m over 5=2m+8
12m=5(2m+8)
12m=(10m+40)
12m=10m+40
12m-10m=40
2m=40
m=40 over 2
m=20
參考: me & my brain~


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