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2014-06-02T21:20:39+03:00

a=2b

c=a+b

c-b=18

a=?

b=?

c=?

c-b=18 => c=b+18

c=a+b

c=18+b => a=18
b=a:2

b=18:2

b=9

c=a+b

c=18+9
c=27
Raspuns: a=18

                 b=9

                 c=27

10 3 10
2014-06-02T21:22:04+03:00
A,b,c
a=2b
c=a+b
c-b=18
c=a+b => c-b =a... c-b = 18 =>a=18
a=2b => b=18/2 = 9
c=a+b = 9+18 = 27
6 3 6