\"\"\"\"

\

\"\"

\

Given figure is Triangle and its perimeter \"\".

\

Use the formula for the perimeter of the Triangle.

\

The perimeter P of a Triangle is given by the formula \"\".

\

Where a, b, c are called as sides of  the Triangle and a=b.\"\"

\

The values of a,b,c,p are 2x+2,2x+2,3x\"\"3,15 are substitute in  \"\"

\

\"\"= \"\"

\

Rearrange the terms using commutative property of addition: \"\".

\

\"\"= \"\"

\

\"\"= \"\"                         (Add: \"\")

\

\"\"                                        (Simplify: \"\")\"\"

\

Apply to subtraction property of equality: Subtract 1 from each side.

\

\"\"

\

\"\"                                                 (Subtract:\"\")

\

Apply to divison property of equality: Divide each side by 7.

\

\"\"

\

\"\"                                                      (Cancel common terms)\"\"

\

The value of \"\" is substitute in 2x+2,2x+2,3x\"\"3.

\

2x+2\"\"\"\".

\

2x+2\"\"\"\".

\

3x\"\"3\"\"\"\".\"\"

\

The value of \"\" and sides of the Triangle are 6,6,3.