Question

Pls answer enclosed questions :))

Answer 1

a) 9a + 6b

b) 5c - 3d

Explanation:

a)

4a + 7b + 5a - b =

= 4a + 5a + 7b - 1b

= 9a + 6b

b)

6c + 4d - c - 7d =

= 6c - 1c + 4d - 7d

= 5c - 3d

Answer 2

a) 9a+6b
b)5c-3d
combine like terms*