Answer:
joe mama
Step-by-step explanation:
a = length
b = height(width)
a=3b
2(a+b)=120
2(b+3b)=2(4b)=8b
8b=120
b=15
a=45
length is 45 feet
width is 15 feet
Add and on both sides.
Add or subtract like terms.
Divide on both sides.
is the independent variable now.
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