Question

Tolong bantu jawab no yg di bulatin pake cara

Answer 1

1) |y | < 3
={y | -3 < y < 3 }

2) |6x - 11|≤ -7
7 ≤ 6x -11 ≤ -7
7+11 ≤ 6x ≤ -7 +11
18 ≤ 6x ≤ 4
3 ≤ x ≤ 2/3
={x| x ≤ 2/3 atau x ≥ 3, xe R}

3) |7y - 12|  - 3 > 6
|7x - 12| > 9
- 9 > 7x - 12 > 9
-9 +12 > 7x > 9 + 12
3 > 7x > 21
3/7  > x > 3
= {x | x< 3/7  atau x > 3 }