Since the sides are congruent so are the angles (SSS) so 3x+3x+3x=180 because all the angles in a triangle add up to 180 degrees
9x=180
X=20
So the answer is x =20
Answer:
140/3 or 46.6(with the 6 repeating)
Step-by-step explanation:
(x+55)+(2x-15)=180
Answer:
The equation is 2/3x-6
Step-by-step explanation:
yea
Answer:
x=20
Step-by-step explanation:
Let the number be x
(x-8)-12=0
x-8-12=0
x-20=0
Add 20 to both sides
x=20