Answer:
Step-by-step explanation:
Perimeter= all sides added together
so in this case
3x+1 = 2x + 2x + x-1 + x+2 + x-1 + x + 2
now you may be wondering why i put two 2x's, two 2+x, and two x-1 , the far left side is 2x and has 2 lines and so does the bottom side which has 2 lines so theyre congruent ( the same case for the 2+x and x-1 ) so you need to account for all sides.
so lets simplify this huge equation!
3x+1 = 4x + 1x - 1 + 1x + 2 + 1x - 1 + 1x + 2
3x+1 = 8x - 1 + 2 - 1 + 2
3x + 1 = 8x + 2
-3x on both sides
1 = 5x + 2
-2 on each side
-1 = 5x
x = -1/5
