We can simplify the expression: 9+3 + 4t + 5+3 - 2 + t, by following these steps:
1. Combining like terms, we can add and subtract the terms that are not multiplied by the variable t:
9+3 + 4t + 5+3 - 2 + t = 9+3+5+3-2+4t+t = 18 + 4t + t
2.Combine the terms that are being multiplied by the variable t, like this:
18 + 4t + t = 18 + 5t
Then, after combining like terms, we get the expression:
18 + 5t