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a =25

b =a-8

c=a-9

( a-b) +c=?

(a-c) +b=?



Răspuns :

a=25
b=17
c=16
(25-17)+16=24
(25-16)+17=26
(25-a+8)+a-9=2a+42
(25-a-9)+a-8=2a+8