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Neo2
a fost răspuns

daca a supra b = 3 supra 7 atunci 2a+b supra 3a+2b = ?

Răspuns :

Didi12342
a/b = 3/7 ==> a = 3b/7
(2a+b)/(3a+2b) =

= (6b/7 +b)/(9b/7+2b) =

= (6b+7b)/7 / (9b + 14b)/7 =

= 13b/7 × 7/23b =

= 13b/23b =

= 13/23

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