Ada gambarnya, tolong Pakai Cara, trims.

Bab Aljabar Dasar
Matematika SMP Kelas VII

(2a/3x) . (2x - 6xy)/(12a)
= (2a/12a) . (2x (1 - 3y))/(3x)
= (1/6) . (2 (1 - 3y))/3
= (1/3) . (2 (1 - 3y))/6
= (1/3) . (1 - 3y)/3
= (1 - 3y)/9

coba di cek lagi yah.. maaf tulisannya jelek hehee..