Ini bagaimana buat? Saya ada jawapan m=2. Tetapi saya nak steps... Tolong Bantu.

g(5) = (2x5)/(5+m)
3g(2) = 3[(2x2)/(2+m)]

if g(5) = 3g(2)
10/(5+m) = 3[4/(2+m)]
10/(5+m) = 12/(2+m)
10x(2+m) = 12x(5+m)
20+10m = 60 + 12m
       -2m = 40
          m = -20

apa ada yg salah?