Question

How do you combine like terms in `5d - 3f + 9f + 7d`?

Answer 1

See a solution process below:

Explanation:

First, group like terms:

`5d + 7d - 3f + 9f`

Now combine like terms:

`(5 + 7)d + (-3 + 9)f`

`12d + 6f`