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Răspuns :

Renatemambouko
0,(3)=3/9=1/3
0,25=25/100=1/4

1/3×a =1/4×b
4a=3b    b=4a/3
(a+b)×2=82
a+b=41
a+4a/3=41
3a+4a=123
a=123/7
b=4*123/21=164/7

verificare  (123/7+164/7)×2=287/7×2=41×2=82

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