What is the value of x? make sure to show all of your work!

Equilateral triangle because all three sides are equal.So all three internal angles are also congruent to each other and are each 60 degrees

7x - 3 = 60
7x = 63
  x = 9

if you need to find for y
11y + 5 = 60
11y = 55
    y = 5

Try d cause last i guessed that and it was right