Odpowiedź:
a)
|x + 14| = 28
x + 14 = 28 v x + 14 = - 28
x = 14 v x = - 42
b)
||x - 4|-3| = 7
|x - 4 - 3| = 7 v |x - 4 - 3| = - 7
|x - 7| = 7 v |x - 7| = - 7
x - 7 = 7 v x - 7 = - 7
x = 14 v x = 0
