Mohon bantuannya ya nomor 10. pakai caranya.

X – 1 ≤ 2x + 1
x – 2x ≤ 1 + 1
-x ≤ 2
x ≥ -2

2x + 1 ≤ 3 + x
2x – x ≤ 3 – 1
x ≤ 2

HP = { x| -2 ≤ x ≤ 2}