Question 271396
W=L-3
2W+2L=84
2(L-3)+2L=84
2L-6+2L=84
4L=84+6
4L=90
L=90/4
L=22.5 ANS. FOR THE LWNGTH.
W=22.5-3=19.5 ANS. FOR THE WIDTH.
PROOF;
2*19.5+2*22.5=84
39+45=84
84=84