Can somebody give me a detailed equation for this angle, I already have some but i need more thank you.

Answer:
47 + 2x - 3 = 90
OR
2x - 3 + 47 = 90 (same equation but order of angles reversed)
x = 23
Step-by-step explanation:
47 + 2x - 3 = 90
44 + 2x = 90
(44 - 44) + 2x = 90 - 44
2x = 46
2x/2 = 46/2
x = 23