Question

Dau funda:
Daca a + b = 20,3 si b + c =23,14 atunci a + 2b + c = ?
mersi.

Answer 1

$a + 2b + c =a+b+b+c=( a + b) + (b + c) =20,3+23,14=43,44$

Answer 2

a+b+b+c=a+2b+c=20,3+23,14=
=43,44