7x + 5° = 47°, because of alternate exterior angles (We can use this because the lines are parallel). Since we know this, we can solve for x.
<u>Solving this equation:</u>
7x + 5 = 47 and if you subtract by 5 on both sides you would get that 7x = 42. From here, you divide 42 by 7 to get your answer. 42/7 = 6 so <em><u>x = 6 degrees</u></em>.
<u><em>Note: I assumed that the angle 7x + 5 was 7x + 5°</em></u>