Ajutor repede doar ex 3
![Ajutor Repede Doar Ex 3 class=](https://ro-static.z-dn.net/files/d2a/fe22abe183c77ac867c43900aaa923c4.png)
Răspuns:
[tex](26 + (x - 7) \times 12) \div 2= 49 \\ = 26 + (x - 7) \times 12 = 49 \times 2 = 98 \\ = 26 + 12x - 84 = 98 \\ = 26 - 84 + 12x = 98 \\ = - 58 + 12x = 98 \\ 12x = - 58 - 98 = - 156 \\ 12x = - 156 \\ x = - 156 \div 12 = - 13[/tex]