Răspuns:
1. x + 23 = 42
x = 42 - 23
x = 19
2. 7x + 1 = 29
7x = 28
x = 4
d) 4
4. (132x - 50x) : 41 = 60
82 x : 41 = 60
2x = 60
x = 30
6. 3x - 1 < x+ 3
2x < 4
x < 2
x = {-infinit, 2}
