Find the Perimeter rectangle (9)(8-12w)

Math
l=9w=8-12w
The perimeter of a rectangle is equal to the sum of all sides of the rectangle.
length+length+width+width=2⋅(length)+2⋅(width)
Substitute the values of the length l=9 and width w=8-12 into the formula for the perimeter of a rectangle.
2⋅9+2⋅(8-12)
Simplify each term.
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Multiply 2 by 9.
18+2⋅(8-12)
Subtract 12 from 8.
18+2⋅-4
Multiply 2 by -4.
18-8
18-8
Subtract 8 from 18.
10 w
Find the Perimeter rectangle (9)(8-12w)

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