Question

Rezolvati in N ecuatia 2* (x+7)- 14= 28

Answer 1

$2*(x+7)-14=28 \\ 2x+14-14=28 \\ 2x=28 \\ x=28:2 \\ x=14. \\x\in\mathbb{N}$

Answer 2

2*(x+7)-14=28..+14
2*(x+7)=42... /2
x+7=21...-7
x=14