(Q+5)(6+6)=80 DAN P=Q/3 + 3

12Q+60 = 80
12Q=20
Q=20/12 = 10/6= 5/3

P = Q/3 + 3 = Q+9/3
3P=Q+9
Q+9=3P
Q = 3P-9

Q=3P-9
5/3=3P-9
3P-9=5/3
3P = 5/3+9
3P = 5+27/3
P= 32/9

(Q+5)(6+6)=80
(Q+5)(12) = 80
12Q+60=80
12Q=20
Q=5/3

P=Q/3 + 3
= 5/3÷3 + 3
= 5/9 + 3
= 32/9