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Problema 7si 8 pls repede

Problema 7si 8 Pls Repede class=

Răspuns :

a-b=34710

b/a=4/7 ==> 7b=4a

4(a-b)=4 ori 34710

4a-4b=138840

4a=7b

7b-4b=138840

3b=138840

b=138840/3

b=46280

a=b+34710

a=46280+34710

a=80990