1a) 3 < x < 4 7 < y < 8
- 16 < - 2y < - 14
- 13 < x - 2y < - 10
1б)
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1a) 3 < x < 4 7 < y < 8
- 16 < - 2y < - 14
- 13 < x - 2y < - 10
1б)