SOLUTION: The perimeter of the rectangle is 120 units. Find the length of side AB . AD is 4x+1 DC is 3x-3

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Question 794279: The perimeter of the rectangle is 120 units. Find the length of side AB .
AD is 4x+1
DC is 3x-3
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
AD and DC are consecutive sides.
One must be the length and the other the width of the rectangle, so
perimeter=2%28AD%2BDC%29
2%284x%2B1%2B3x-3%29=120
2%287x-2%29=120
7x-2=120%2F2
7x-2=60
7x=60%2B2
7x=62
x=62%2F7
x=8%266%2F7
If an approximate value (as a decimal) is accepted, or required, round to the needed number of digits
x=8.857142857142857......