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Determinati a/b daca a) 2a+3b/3a+2b=15/11. b)5a-3b/7a-2b=4/7

Răspuns :

POZA
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Succes in continuare!
Vezi imaginea CHRISTIAN02
a)
11(2a+3b)=15(3a +2b), 22a +33b= 45a +30b, 23a=3b, a/b=3/23
b)
7(5a - 3b)=4(7a-2b) , 35a- 21b=28a-8b , 7a = 13b, a/b= 13/7