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Verified answer
1.|5 - 3x| > 2
5 - 3x > 2 atau 5 - 3x < -2
5 - 2 > 3x atau 5 + 2 < 3x
x < 3/3 atau x > 7/3
x < 1
HP = {x| x < 1 atau x > 7/3 , x e R}
2.
|8x - 7| ≤ |5 - 2x|
(8x - 7)² - (5 - 2x)² ≤ 0
➡ Ingat : a² - b² = (a + b)(a - b)
(6x - 2)(10x - 12) ≤ 0
6x - 2 = 0 ---> x = 2/6 = 1/3
10x - 12 = 0 ---> x = 12/10 = 6/5
Nilai x yg memenuhi :
1/3 ≤ x ≤ 6/5
HP = {x| 1/3 ≤ x ≤ 6/5 , x e R}