Question

решите двойное неравенство 0<2-х<3

Answer 1

0 < 2 - x < 3 
0 - 2 < 2 - 2 - x < 3 - 2
- 2 <  - x < 1
- 1 < x < 2 

Answer 2

$0 textless 2 - x textless 3$

$0 - 2 textless 2 - 2 - x textless 3 - 2$

$2 textless - x textless 1$

$- 1 textless x textless 2$