Answer: this is just algebra, so you just got to add 3 plus 12 and then add the X at the end cause you don't know it's value.
Step-by-step explanation:
In this case you are multiplying 3 times X so it would stay as 3 and just add 12 = 15 X
Hope I helped.
Answer:
16/ 2/3
x=145
A circle have at max 360 degrees.
