The perimeter of a rectangle can be found by adding the lengths of all sides together. Therefore, for this rectangle:
Perimeter = 2(length + width)
Substituting the given values:
70 = 2(x + x - 9)
Simplifying:
70 = 4x - 18
Adding 18 to both sides:
88 = 4x
Dividing by 4 on both sides:
22 = x
So the length of the rectangle is x = 22.
If a rectangle has a perimeter of 70, a length of x and a width of x - 9, find the value of the length of the rectangle.
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