13y - 9y + 6 = 26
Solve

13y - 9y + 6 = 26
4y + 6 = 26
4y + 6 - 6 = 26 - 6 (we subtracted six from both sides so that the six on the left side cancels out and we are just left with 4y = 20.

4y = 20
4y/4 = 20/4 (we divided both sides by 4 because we needed to get rid of the four from our left side so that we would just be left with our x and our answer.

X = 5

Example 1 was created by following the constitution step correctly.

Step-by-step explanation:

If you compare both figures, you would see that Example 1 shows an actual bisector, while Example 2 doesn't. Basically, you can deduct this by observing the simmetry around the bisector.

Remember that a bisector is a line which divide an angle in two equal parts, and the Example 2 doesn't show that. That's why Example 2 wasn't created by following the constitution steps correctly.

Therefore, Example 1 was created by following the constitution step correctly.