Question

Daca a+b=1450, b+c=1231, iar a+c=2242, afla dublul sumei celor trei numere.

Answer 1

a+b+b+c+a+c=1450+1231+2242
(le grupam)
2a+2b+2c=4923
2×(a+b+c)=4923

Answer 2

(a+b)+(a+c)+(b+c)=1450+1231+2242
***nu trebuie sa pui paranteze, le am pus ca sa vezi ce fac**

2a+2b+2c=4923
2(a+b+c)=4923