Question

rezolvati in z ecuatiile 5x-1=9

Answer 1

$\it 5x-1=9 \Longrightarrow 5x=9+1 \Longrightarrow 5x = 10 \Longrightarrow x = 2 \in \mathbb{Z}$

Answer 2

5 x - 1 = 9 
5 x = 9 + 1 
5 x = 10 
x = 10 : 5 
x = 2 ∈ Z