Solution:

Now, multiply 3 with 2x - 7 and 4 with x + 3.

We multiply both sides.

Now, transpose 4x to the left hand side and -21 to the right hand side.

Now, do the addition and subtraction.

Divide both sides by 2.

So we are done.
Answer:
x = 16.5
Hope you could understand.
If you have any query, feel free to ask.