A+B=123,A/B=7.1求AB

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A+B=123,A/B=7.1求ABA+B=123,A/B=7.1求ABA+B=123,A/B=7.1求ABA+B=123,A/B=7.1求ABa=7b+18b+1=1238b=122b=61/4a=

A+B=123,A/B=7.1求AB
A+B=123,A/B=7.1求AB

A+B=123,A/B=7.1求AB
A+B=123,A/B=7.1
求AB
a= 7b+1
8b+1 = 123
8b = 122
b= 61/4
a= (427+4)/4 = 431/4

7B+1+B=123
8B=122
B=15又1/4
.................

B=(123-1)/8=61/4
A=123-61/4=431/4

8B=123-1=122
B=15.25
A=107.75
AB=1643.1875