Question 278934
2L+2W=62
2(L+21)+2*(2W)=120
2L+42+4W=120
2L+42+2W+2W=120
2L+2W+2W+42=120
62+42+2W=120
104+2W=120
2W=16
W=8
2L+2*8=62
2L=62-16
divide by 2
L=31-8
L=23
check
2W+2L=62
16+46=62
62=62
ok
check
2*((16)+(23+21))=120
2*(16+44)=120
2*60=120
120=120
ok