Question

Yang bisa matematika bantuannya plisss

Answer 1

No 4 :
p = 4 + l
K = 2 (p + l)
36 = 2 (4 + l + l)
36 = 2 (4 + 2l)
18 = 4 + 2l
atau 2l + 4 = 18

No 5 :
harga sandal = n
harga sepatu = p

n = 1/4p
5n + 4p = 400000
5 (1/4p) + 4p = 400000
21/4p = 400000