Question

реши уравнения x-8=20, 14-x=6.

Answer 1

x - 8 = 20;
x = 20 + 8 
x = 28

14 - x = 6 
- x = 6 - 14
- x = - 8
x = 8

Answer 2

x - 8 = 20
x = 20 + 8
x = 28
Проверка:
28 - 8 = 20
20 = 20

14 - x = 6
14 - 6 = x
8 = x
Проверка:
14 - 8 = 6
6 = 6