Question

aflati a si b stiind :
a) 2a+3b/5a+2b=13/16
b) a+5b/5a-11b=2
va rog !!!

Answer 1

a)13(5a+2b)=16(2a+3b)
   65a+26b=32a+48b
   33a=22b =>a/b=22/33 sau a/b=2/3

b)2(5a-11b)=a+5b
   10a-22b=a+5b
    9a=27b =>a/b=27/9 sau a/b=3