Diketahui matriks A = (-2c 4 2 5), B = (-4 -a -b-5 b), C =

Diketahui matriks A = (-2c 4 2 5), B = (-4 -a -b-5 b), C = (-1 3 0 2), dan D = (4 1 -2 3). Jika A+B=CD, nilai a+b+c adalah....