 鲜花( 634)  鸡蛋( 5)
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Originally posted by knptmug at 2005-4-20 09:47 PM:
; G1 K, U0 R0 _ }" Z( q5 {set small watermelon: x, middle watermelon y and big watermeton z. q& w' [- J) `; A7 v5 b1 E3 s
/ i5 ], I1 r. H' stwo simultaneous equations are set up:
" Z+ y" v: K& n( Y6 ]' M0.5x+2y+5z=50 (1)
$ _* c6 D) T! ~1 \, s9 \$ A( @/ `; Fx+y+z=50 (2)) E7 p- Y2 X% ?
Equation(1) means that the total amount paid is equal t ...
- y9 i' w' p( r) T) R+ U:lol::lol:9 x3 E, t$ m# f) }7 Z1 _1 w0 K) k
楼主的标题就是给你写的!& _4 j/ p. H7 t
你看看我们智力超群的同学们回答的都多好啊! |
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