Question 145799
L=2W-6
2L+2W=126
2(2W-6)+2W=126
4W-12+2W=126
6W=126+12
6W=138
W=138/6
W=23 M. FOR THE WIDTH
L=2*23-6
L=46-6
L=40 M. FOR THE LENGTH.
PROOF
2*40=2*23=126
80+46=126
126=126