娜子
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註冊 2006-2-16
註冊天數 6857
狀態 離線
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1) 3k-(5k-18)=12-(18-2k)
3k-5k+18 =12-18+2k
3k-5k-2k =12-18-18
-4k =-24
-4k隨-4 =-24隨-4
k =6
2) 1 over 3 (h+9) = 1 over 6- 1 over 2 (h+11)
1over3h+3 = 1 over 6- 1 over 2h+5and1over2
1over3h-1over2h= 1 over 6+5and1over2-3
-1over6h =2and2over3
-1over6h隨-1over6=2and2over3隨-1over6
h =16
is this correct???
plx double check b4 you write
i am afraid that i will 害 you
[ 本帖最後由 ~蛋糕~ 於 2006-11-9 07:13 PM 編輯 ]
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