A. 5u + 3 = 2u -12 b. 2/3a = 6/20 tolong dijawab

Penjelasan dengan langkah-langkah:

a. 5u + 3 = 2u – 12

5u – 2u = -3 – 12

3u = -15

u = -5

b. 2/3a = 6/20

2/3a = 3/10

a = (3/2) (3/10)

a = 9/20