Perimeter of pentagon is 9x-1. Find length of missing side.
Sides are 3x-4; 2x+3; x+1; x-5
3x-4 + 2x+3 + x+1 + x-5
7x - 5 plus the missing side is 9x-1
9x-7x is 2x
-5 - (-1) is -4
So the missing side is 2x-4
Sides are 3x-4; 2x+3; x+1; x-5
7x - 5 plus the missing side is 9x-1
9x-7x is 2x
-5 - (-1) is -4
So the missing side is 2x-4