Question

Can someone help me solve X please?

Answer 1

Both equations are the same angle so you have to create your own equation to solve for x.

4x + 66 = 7x + 15
Subtract 4x to both sides.
66 = 3x + 15
Subtract 15 from both sides.
51 = 3x
Divide.
17 = x 
I hope this helps love! :)