Question

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?

`18 = (w)/(2) - 4`

`18 = 4 - (w)/(2)`

`18 - 4 = (w)/(2)`



`18 - (w)/(2) = 4`
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Answer 1

A or the top option

Explanation:

I used process of elimination

B simply does not work because in order for 4 to be subtracted by another number to equal 18, that number (width) would have to be negative

C also isn't correct since if it was solved out, we would add four to both sides, making the left side equal to w/2 + 4 which isn't what we want because the length is 4 shorter, not longer

D can be dealt with in the same way, by adding w/2 on both sides, making the left side 4 + w/2, the same as the previous option.