Tolong dijawab dan dibantu

a. p/ p+6 = 4/4+8
= p/p+6 = 4/12
= 12p = 4p + 24
= 12p - 4p = 24
= 8p = 24
= p = 3

b. 4/ 4+r = 8/8+4
= 4/4+r = 8/12
= 32 + 8r = 48
= 8r = 48- 32
= 8r = 16
= r = 16/8 = 2
Maaf kalau salah