Which is the Value of x?

X=14

X=28

X=67

X=37

x = 28

Step-by-step explanation:

3x - 21 = 63, I am making them equal to each other because of the vertical angle theorem.

3x - 21 = 63, add 21 to both sides

3x = 84, divide 3 to both sides to make x by itself

x = 28  

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !