25x+5x. 8m+m. 12y-3y. 21a-20a. (8+m):2. 10*(y+11) (a-15)*4. 9*(15-c)

Question

25x+5x. 8m+m. 12y-3y. 21a-20a. (8+m):2. 10*(y+11) (a-15)*4. 9*(15-c)

Answer 1

30х
9m
9y
a
?
10y+110
4a-60
135-9c