What is the value of x?

Answer:
x=8
Step-by-step explanation:
this is an equilateral triangle, which means all sides are equal
if all the sides are equal, all the angles are equal
the three angles are all equal to 60 degrees (180/3 = 60)
7x+4 = 60
subtract 4 from each side
7x = 56
divide by 7 on each side
x = 8
Answer:
x=8
Step-by-step explanation:
This triangle is an equilateral one, and so all three angles are the same; their measure is 60 degrees each. Thus, 7x + 4 = 60, or 7x = 56.
x comes out to 8.