Answer:
x = 9
Step-by-step explanation:
Because all the sides are equal, that means all the angles are equal. Also because all the sides are equal, each angle = 60 degrees
So that means we can say something like this:
7x - 3 = 60
and then we don't even need to figure out the value of y.
7x - 3 = 60
add 3 to both sides
7x = 63
divide both sides by 7
x = 9
