i think the answer is 3x+12=180 just need to know for sure

Answer:
The angle is 48
Step-by-step explanation:
To solve convert the words into a math equation.
Three times the measure is 3x where x is the meaure of the angle.
Is means = so 3x =.
12 more than the measure of its supplement means 12 + ____. Fill in the blank with the value of the supplement. A supplement is an angle which adds to it to make 180. This means its whats left over from 180 - x.
So this means 12 + 180 - x = 192 - x.
All together the equation is 3x = 192 - x.
Solve using inverse operations.
3x + x = 192
4x = 192
x = 48