14,15 tlng ya dijawab Pake cara

Bab Aljabar Dasar
Matematika SMP Kelas VII

14] 8x - 6 ≤ 3x + 10
8x - 3x ≤ 10 + 6
5x ≤ 16
x ≤ 16/5

15] (x + 3)/5 - (2x - 3)/4 ≤ 1/2
** semua dikalikan 20 **
4 (x + 3) - 5 (2x - 3) ≤ 10
4x + 12 - 10x + 15 ≤ 10
-6x ≤ 10 - 27
x ≥ -17/-6
x ≥ 17/6