Question 14600
-3[4x-y]
-3[4(-4) - (-15)]
-3[4(-4) + 15]
-3[-16 + 15]
-3[-1]
+3


explanations:
4(-4) means (+4)*(-4) --> + and - give - and 4*4 is 16
-(-15) means (-1)*(-15) --> - and - give + and 1*15 is 15


jon.