Odpowiedź:
1.
6z - 8 - z = 9 - 2z - 3
5z - 8 = - 2z + 6
5z + 2z = 6 + 8
7z = 14
z = 14/7 = 2
sprawdzenie
6 * 2 - 8 - 2 = 9 - 2 * 2 - 3
12 - 10 = 6 - 4
2 = 2
L = P
2.
5z + 10 = 8z + 9
5z - 8z =9 - 10
- 3z = - 1
3z = 1
z = 1/3
sprawdzenie
5 * 1/3 + 10 = 8 * 1/3 + 9
5/3 + 10 = 8/3 + 9 | * 3
5 + 30 = 8 + 27
35 = 35
L = P
