Badly expressed! Do you mean "what is the area of a rectangle with a length that is 3 more than twice its width?" ? If you have a width, then presumably you have a length, in which case you presumably have a rectangle. But what do we want to know about this rectangle? You haven't said. Its area? Its perimeter? Its color? Its shoe size?
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Call the width x and the length 3x.Write an equation for perimeter: 3x+3x+x+x=48Simplify: 8x=48Divide: x=6Plug in 6 for x, therefore the width of the rectange is 6.
l = 2*w - 3
(2x)+3
3
2x+3 where x is the unknown number