415,923 views
39 votes
39 votes
Perimeter and algebraic expression. Find expression that represents the perimeter

Perimeter and algebraic expression. Find expression that represents the perimeter-example-1
User Xuan
by
2.8k points

1 Answer

8 votes
8 votes

For this exercise it is important to remember that the perimeter of any triangle can be found by adding the lengths of its sides.

In this case, given the triangle shown in the picture, you can set up the following expression:


(2x-2)+(4x-3)+3x

Therefore, in order to find the expression that represents the perimeter, you need to add the like terms (remember that the like terms are those whose variables and exponents are the same).

Then, you get:


=(2x+4x+3x)+(-2-3)=9x-5

The answer is:


(9x-5)cm

User JPJedi
by
3.1k points