Question

the perimeter of rectangle is 13 cm and its width is 11/4cm .find the length

Answer 1

2(l+b)=13
2(l+11/4)=13
2(4l+11/4)=13
(4l+11)=26
4l = 26-11=15
l=15/4

Answer 2

$2(l + b)$
2(l+11/4)=13
2l+11/2=13
2l=13×2/11
2l=26/11
l=26/11/2
l=13/11