已知,四分之a=三分之b=五分之c,且5a+2b-3c=33,求ABC的值
人气:429 ℃ 时间:2020-05-10 18:22:09
解答
4B=3A3C=5B 5A=4C 所以:
A= 12B= 9C= 15
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