Tolong di bantu kak nomor 5,6,7,8. Pake cara

3.
= 3 log 3 × 12 / 4
= 3 log 9
= 3 log 3^2
= 2

5.
y-x = 28+3
y-x = 31
y+x = 60-2
y+x = 58 (e)