Respuesta :

Step-by-step explanation:

length of a rectangle = (3x+4)

breadth of a rectangle =(2x-1)

perimeter of a rectangle =?

we know that,

perimeter of a rectangle=2 (length+breadth)

2 (3x+4)+(2x-1)

(6x+8)+(4x-4)

(6x+4x)+(4+8)

10x+12

x=12-10=2

x=2#