tolong caranya plisssssss yg kedua sama ketiga

No 2
|2x+1| ≤ | x-3 |

1.) 2x +1 ≤ x-3
2x - x ≤-3-1
x ≤ -4

2.) 2x + 1 ≤ -(x-3)
2x + 1 ≤ -x + 3
3x ≤ 2
x ≤ 2/3

-4 ≤ x ≤ 2/3
(maaf kalau salah)



no 3 yaa
cari y
4x-y = 11 | |
2x+3y = 9 | dikali 2 |

4x - y = 11
4x + 6y =18
_________ -
= -7y = -7
= y = 1

cari x
4x -y = 11
4x - 1 = 11
4x - 1 = 11
4x = 11+1
4x =12
x =12/4
x = 3

hasil dari 2x - 3y
2(3) - 3(1)
= 6-3
=3
jadi, jawabanya 3