Answer:
x =16
Explanation:
A right angle has 90 degrees.
The two given angles add to 90 degrees
3x + 2 + 40 = 90 Combine the left side
3x + 42 = 90 Subtract 42 from both sides
3x + 42 - 42 = 90 - 42 combine
3x = 48 Divide by 3
3x/3 = 48/3 Do the division
x = 16