Here is the equation:
Your goal is to get a number variable
2w+2(3w+9)=98
Solve the parentheses first, namely "w" by itself on one side
2w+6w+18=98
Add common values
8w+18=98
Minus 18 from both sides
8w+18-18=98-18
It is now
8w=80
Now, divide 80 by 8
80÷8=10
w=10
Lets check:
2(10)+ 2(30+9)=98
20+60+18=98
Which is correct
So that means each side of the width is 10 inches
and each length side is 39 inches
Answer: So that means that width side is 10 inches each and each length side is 39 inches each. 10+10+39+39=98 inches