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a fost răspuns

ajutati-ma va rogggg!!!! 2a+3b/5a-b=3/2sa se afle
a/b si a+b/3a-b

Răspuns :

Renatemambouko
(2a+3b)/(5a-b)=3/2
4a+6b=15a-3b
11a=9b    :11b
11a/11b=9b/11b
a/b=9/11

(a+b)/(3a-b)=  (a/b+1)/(3a/b-1)=(9/11+1)/(3×9/11-1)=(20/11)/[(27-11)/11]=
=(20/11)/(16/11)=20/11× 11/16=20/16=5/4

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