tolong bantu dijawab soalnya besok di kumpulin

1.
3(a + 4b)
= 3a + 12b

2.
(3x)³
= 3³x³
= 27x³

3.
[a] 6ax + 7by - 3ax - 4by
= 6ax - 3ax + 7by - 4by
= 3ax + 3by
[b] (2a² + 5) - (a² - 2a + 3)
= 2a² + 5 - a² + 2a - 3
= 2a² - a² + 2a + 5 - 3
= a² + 2a + 2
[c] 4(x - 1) + 5(7x + 3)
= 4x - 4 + 35x + 15
= 4x + 35x - 4 + 15
= 39x + 11
[d] 3/7K × 5/6L
= 15/42KL
= 5/14KL
[e] 3/4n ÷ 3/5m
= 3/4n × 5m/3
= 15m/12n
= 5m/4n
[f] (2/3k²)³
= 2³/3³k²∙³
= 8/27k⁶

Mohon maaf hanya sampai nomor 3, karena terlalu banyak

Semoga membantu :)