Combine like terms: 3t + 5 (3 + t) - 2t - 4

3t + 15 + 5t - 2t - 4

6t + 15 - 4

6t + 11

first you will distribute the 5 to (3+t)

So it will be 3t+15+5t-2t-4

then you will add 3t and 5t and - 2t together

So you get 6t+15-4

Lastly you will do 15-4

So you get 6t+11

That's the answer 6t+11