z+z+z=15 2×z+k+k=10 p+p+p=12 (z-k)×p=?

3z = 15
z = 5

2z + 2k = 10
10 + 2k = 10
k = 0

3p = 12
p = 4

(z - k) x p
(5-0) x 4
20

#maaf jika salah semoga membantu