Answer:

mark Me Brainlist

Step-by-step explanation:

Given each sides of a triangle is x−2. Then its perimeter is 3(x−2)=3x−6.

According to the problem,

3x−6=15

or, x=7.

Answer:

perimeter of the triangle=sum of all sides

Then,

• 3(x-2)=15
• x-2=5
• x=5/2