1. 4x + 3 = 3(x + 6) 2. -9x – 30 = -16x – 9 3. 4x – 7 ≥ 5 4. 3x + 4 ≤ 31 + 4x 5. 5x – 10 ≤ 6 – 3x pakai caranya ya

4x+3=3x+18
x=15

-9x-30=-16x-9
7x=21
x=3

1) 4x + 3 = 3(x + 6)
4x + 3 = 3x + 18
4x - 3x = 18 - 3
x =15
2) -9x - 30 = -16x - 9
-9x + 16x = -9 + 30
7x = 21
x = 21/7
x = 3