Tolong bantu ngejawabnya

5log20 - 5log6 + 5log18 - 5log12
= 5log (20/6 . 18/12)
= 5log (10/3 . 3/2)
= 5log5
= 1

2(x + 4) - 7 = 5/4 + (3x - 2)/3 .................. kedua ruas kali 12
24(x + 4) - 84 = 15 + 4(3x - 2)
24x + 96 - 84 = 15 + 12x - 8
24x + 12 = 12x + 7
12x = -5
x = -5/12