Question

The perimeter of the figure is given. Find the length of the indicated side.

?
2x - 2
Perimeter = 14x + 2
The length of the indicated side is

Answer 1

5x + 3

explanation: (5x + 3) + (5x + 3) + (2x - 2) + (2x - 2) = 14x + 2

Answer 2

The indicated side is: 5x + 3

Explanation:

If the perimeter is 14x +2, then 2x -2 + 2x -2 +? +? = 14x +2.

Subtract 4x and add 4 to both sides: ? + ? = 10x +6

One indicated side is half of 10x +6, therefore it is 5x +3.