Question 965605
P=2L+2W
L=3W-2
52=2(3W-2)+2W
52=6W-4+2W
52=8W-4
8W=52+4
8W=56
W=56/8
W=7 CM FOR THE WIDTH.
L=3*7-2
L=21-2
L=19 CM FOR THE LENGTH.
PROOF:
52=2*19+2*7
52=38+14
52=52