The length of a rectangle is 4 units shorter than half the width. if the length of the rectangle is 18 units, which equation can be used to find w, the width of the rectangle?

8 because if 4 is half plus another 4 would be whole I think

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.