SOLUTION: The length of a rectangle is 3 units shorter than one-third of the width, x. Enter an expression in the box that represents the perimeter of the rectangle. Note: Use one frac

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is 3 units shorter than one-third of the width, x. Enter an expression in the box that represents the perimeter of the rectangle. Note: Use one frac      Log On


   



Question 1045825: The length of a rectangle is 3 units shorter than one-third of the width, x.
Enter an expression in the box that represents the perimeter of the rectangle.
Note: Use one fraction and a variable in the answer

Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x for width
y for length
p for perimeter
y=-3%2Bx%2F3

EQUATION FOR PERIMETER:
p=2x%2B2y

Make the substitution and simplify.
p=2x%2B2%28x%2F3-3%29
p=2x%2B2%28x%2F3-9%2F3%29
p=2x%2B2%28x-9%29%2F3
p=2x%283%2F3%29%2B2%28x-9%29%2F3
p=6x%2F3%2B%282x-18%29%2F3
p=%286x%2B2x-18%29%2F3
highlight%28p=%288x-18%29%2F3%29