Question 89377
2L+2W=50 & W=L-5 THUS WE SUBSTITUTE (L-5) FOR W & SOLVE THE FIRST EQAUTION:
2L+2(L-5)=50
2L+2L-10=50
4L=50+10
4L=60
L=60/4
L=15 IS THE LENGTH OF THE RECTANGLE.
W=15-5
W=10
PROOF:
2*15+2*10=50
30+20=50
50=50