Question

How do you combine like terms in `(t + 7) + ( 5t + 6)`?

Answer 1

Answer: `6t+13`

Explanation:

We can only add/subtract terms with the same variable to the same degree. In this expression, `t` and `5t` have the same variable to the same degree while `7` and `6` are both constants, so:
`t+7+5t+6`
By rearranging:
`=t+5t+6+7`
Note that `t` is really `1*t`, so:
`=6t+13`

Hope this helps.