Question

when 5 is subtracted from length and breadth of a rectangles the perimeter becomes 25 ,what is the mathematical form of this statement ?

Answer 1

let length of rectangle =x
breath of rectangle =y
if five is subtracted from both
length =x-5
breath =y-5
perimeter =2× (x+y)
=>2 (x-5+y-5)=25
=>2x+2y-20=25
=>2x+2y=45
i hope u can understand