Question

I forgot how to do this. please give me a example on how i do this thank u

Answer 1

`t \in \mathrm {R}`

Explanation:

`2t + 6 = 2(t + 3)`

`2t + 6 = 2t + 6`

`2t + 6 - 2t = 2t - 6 - 2t`

`6 = 6`

`t \in \mathrm {R}`