Question

KatrinaKaif how did u get 3t -7 = 2 - 2t?

Answer 1

4t-7-t=7-2t-5

This is your orginal expression
As you can see, there are 2 "t"s on the left side of the equal sign

Collect the like terms first (on each side)
Which means 4t - 7 - t = 3t - 7

Now let us move to the other side of the equal sign:
7 - 2t - 5

You can see that 5 can be substracted from 7 so :
7- 5 - 2t = 2 - 2t