2a﹣3b＝0
a＝3b/2
5b－3c＝0
c＝5b/3
∴a∶b∶c＝3b/2∶b∶5b/3＝9∶6∶10.
若3（2a-3b）²+2/5b-3c/=0,則a：b：c=多少
若3（2a-3b）²+2/5b-3c/=0,則a：b：c=多少
數(shù)學(xué)人氣：855 ℃時(shí)間：2020-04-12 12:11:02
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