Question

Daca a+ 3= 2 x b =c x3 = 18 afla suma nr. a,b si c

Answer 1

A +3 = 2B = 3C = 18
A+B+C = ?
3C = 18 = > C = 6
2B = 18 = > B = 9
A+3 = 18 => A = 15
SUMA : 6 +9 + 15 = 30 

Answer 2

Aici, toate ecuaţiile dau acelaşi număr, 18. Altfel spus:
a +3= 18 ⇒a= 18-3⇒a=15.
2 x b= 18⇒b= 18:2⇒b=9.
3 x c= 18⇒c= 18:3⇒c=6.
15+9+6=30.