Question 890730
VARIABLES: w for width, L for length



TRANSLATE:  L=-8+3w, 2w+2L=64.


SIMPLIFY AND SUBSTITUTE:
w+L=32;
w+(3w-8)=32


SOLVE FOR w FIRST:
4w-8=32
4w=24
<b>w=6</b>


Finish finding L:
L=3w-8
L=3*6-8
L=18-8
<b>L=10</b>