作业帮31.25:a:13.75=100:9.6:b怎么做?急!求a/b各为几（是方法）.急!
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31.25:a:13.75=100:9.6:b怎么做?急!求a/b各为几（是方法）.急!
31.25:a:13.75=100:9.6:b怎么做?
急!
求a/b各为几（是方法）.急!
31.25:a:13.75=100:9.6:b怎么做?急!求a/b各为几（是方法）.急!
第一步100/31.25=3.2
第二步a=9.6/3.2=3
b=13.75＊3.2=44
答案a=3,b=44
A-A=0 A+A=?A÷A=1 A×A=?(A+A)+(A-A)+(AxA+A÷A）=100 A=?
a-2a+3a-4a+5a-6a+7a-8a+9a-10a+11a.+99a-100a=
31.25:a:13.75=100:9.6:b怎么做?急!求a/b各为几（是方法）.急!
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