Please answer quickly

If you can please explain how to do it

your answer will be 6t+4

9t - 3t + 4
= 6t + 4

(hence 9-3)

you can do this due to the t being the same unit (classified as a like term). if it were 9t - 3g + 4, it would have to stay the same.

Before we can solve this word problem, we have to translate first this problem into numerical form.
The sum of fifteen and six times a number t is 81 can be translated into
         15 + 6t = 81
We can now solve this equation.
Let's add both sides of the equation by -15.
         15 + 6t - 15 = 81 - 15
                         6t = 66
Divide both sides of the equation by 6.
                    6t / 6 = 66 / 6
                           t = 11

Therefore, the value of t is 11.

Hope this help yahhh!!