The length of a rectangle is x cm. The width is 5cm shorter than the length. Write and simplify an expression for the perimeter of the rectangle
The width of the rectangle is x - 5 cm.
The perimeter of a rectangle is given by the formula P = 2(length + width).
Substitute the expressions for the length and width into the formula:
P = 2(x + x - 5)
P = 2(2x - 5)
P = 4x - 10
Therefore, the expression for the perimeter of the rectangle is 4x - 10 cm.