Answer:
1)12n - 56
2)6n + 21
3)-12 n -16m
4)-8m + 4
5)9 - 12y
6)-6c +12
Explanation:
6(2n - 9) = (2n x 6) (-9 x 6) = 12n - 56
3(2n + 7) = (2n x 3) (7 x 3) = 6n + 21
-4(3n+4m)= (3n x -4) (4m× -4) = -12 n -16m
-(8m -4)= -8m +4
3/4 (12 - 16y )=(12 x 0.75) (-16x 0.75) = 9 - 12y
-2(3c-6)= (3c x -2) (-6 x -2) = -6c +12