解方程组(5)
?3x?y?2z?3?5x?4y?z?0?x?2y?3z?26???
(1)?2x?y?4z?11(2) ?3x?y?4z?11(3)?2x?3y?z?24
??7x?y?5z?1
?x?y?5(4)??x?z??1 ??y?z??2
?3x?4y?5z?5(7)??x?2y?4z??2??2x?2y?3z?3
?(10) ?
3x?2y?z?6
?6x?y?2z??2??6x?2y?5z?3
?
?x:y?1:5(13)?3?y:z?5:6??x?z?27
?
??x?y?z??25)x?3y?1z2?3??24?3x?4y?5z?58)??x?2y?4z??2 ??2x?2y?3z?3??x?2y?z?0?3x?y?2z?0(12)
??7x?6y?7z?100.??a?b?c?5(14)?4a?2b?c?8??9a?3b?c?13??
3x?2y?z?39?2x?y?3z?3
(6)?
?3x?y?2z??1 ??
x?y?x?5
?x:y?(9)?
2:3?x:z?2:7
??
2x?2y?3z?1??
y?z?x
?2x?3y?2z?5?
?
x?2y?z?13
??
a?b?3(15)
?b?c??2
??
a?c?9(( (11)
?2x?y?z?3?x?2y?z??(16)?3x?4y?z?8 (17) ??3x?2y?5z?2? (18)?x?2y?z?6 ??x?y?2z??3
?x:y?3:
(19)?2
?y:z?5:4??x?y?z?66
?x?y?z?0.5
(22)??x?3y?2z?0
??3x?2y?z?2
?2x?5y?3z?
(25)?3
??5x?4y
?3?2y?3z
2?7
?2x?y?z
(28)??15
?x?2y?z?16
??x?y?2z?17 ?3x?2y?1?1???4x?2y?7z?30?2x?y?z?2?3x?y??x?2y?3z?15(20)?2x?2?2x?y?3z?11(21)???x?y?7z?20? ?x?y?4z??10 ?x?3y?2z?14 ?3x?2y?1?x?y?z?(23)??2y?3z?2(24)?3?y?z?x?5 ??x?5z?3 ??z?x?y?7 ?a?b?c?5x?2y?z?2x?y?3z??3x?2y?4z?126)??4a?2b?c?8(27)9103??9a?3b?c?13 ?a?2b?c?7?29)??b?2c?d?10?15(30)?x?y?y?z?z?u?u?v?1004?c?2d?a??x?y?z?u?v?2010
??3d?4a?5b?32( (
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