Question

Find the value of x when in a triangle, each side = x-2 and perimeter = 15 units

Answer 1

Answer:

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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 2

Answer:

perimeter of the triangle=sum of all sides

Then,

• 3(x-2)=15
• x-2=5
• x=5/2