Respuesta :

Step-by-step explanation:

length of a rectangular deck= 3x+1

breadth of a rectangular deck= 2x

perimeter of a rectangular deck =?

we know that,

perimeter of a rectangular deck = 2 ( length + breadth )

2 (3x + 1)+2x

6x+2+2x

8x+2

x=8-2=6

x=6#