 鲜花( 634)  鸡蛋( 5)
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Originally posted by knptmug at 2005-4-20 09:47 PM:
1 _: V, [7 Y: d+ S% Z% E" w' \set small watermelon: x, middle watermelon y and big watermeton z- d2 H& j. F9 `; S; [ G: j& w
% G8 S7 Y5 f1 X; C5 W6 V) itwo simultaneous equations are set up:( j: h1 R' R( x5 }
0.5x+2y+5z=50 (1)9 m: `3 z: g& d6 t9 H$ \9 c
x+y+z=50 (2)
& }2 E s) v) L& X: UEquation(1) means that the total amount paid is equal t ...
: a) o, K8 F/ c, L:lol::lol:
1 K3 {, i T1 {) \# X* s+ _" T楼主的标题就是给你写的!
0 n4 [. o4 l- U' z你看看我们智力超群的同学们回答的都多好啊! |
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