Răspunsuri

2014-03-31T15:52:51+03:00
B=3xa
c=3xb => c=3x(3xa)=9xa
c-b=18

9a-3a= 6a.
6a=18
a=18/6
a=3.

b=3x3=9

c=9x3=27
cls 3
Pai scrii asa.

b= 3xa
c=3xb
c=3x(3xa)=9xa
c-b=18

9xa=3xa=18
6xa=18
a=18/6
a=3
b= 3x3=9 c= 9x3= 27