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Daca a+3=2xb=cx3=18,aflati suma numerelor a, b si c.


Răspuns :

a+3=2b=3c=18
a+3=18⇒a=15
2b=18⇒b=9
3c=18⇒c=6
a+b+c=15+9+6=30
a + 3 = 18  a = 18 -3  a= 15
2 xb = 18    b = 18 : 2    b = 9
 c x 3 = 18  c = 18 : 3    c = 6
a + b + c = 15 + 9 + 6 = 30