Cara mengerjakan 3(4x-3)=6x+3

Mapel : Matematika
Bab : SPLSV
Kelas : 7 SMP

3(4x – 3) = 6x + 3
= 12x – 9 = 6x + 3
= 12x – 6x = 3 + 9
= 6x = 12
= x = 12 / 6
x = 2

12x-9=6x+3
12x-6x=9+3
6x=12
X=126
X=2