Question

rezolvati in Z ecuatia: |x+5| = 7

Answer 1

salut
|x+5|=7
I:x+5=7 => x=2
II: x+5=-7 => x=-12

Answer 2

x + 5 = 7                x + 5 = - 7 
x = 7 - 5                 x = - 7 - 5 
x = 2                       x = - 12 

x = {- 12; 2}