Cevap:
Adım adım açıklama:
1-x±2y±1
2-6y±12
3--3x-9
4-5x-7
5-2x±3
6--4a±2y-5
7-35x±10y
8-21x-13
9-x±1
10-n±1
11-7x-6y-45
12-x±2y-8
13-5x-10
14-x±a
15-2x±3
16-3d-4e±4
17-5x-12
18-x-1
19-6y±7b±4
20-2y±6
