Question 668028
Let W represent the width of the rectangle. Let the length of the rectangle be (2W+3).

{{{2L+2W=P}}} Formula for perimeter (sort-of)
{{{2(2W+3)+2W=48}}} (substitute)
{{{4W+6+2W=48}}} (simplify/expand)
{{{6W=48-6}}} (isolate x)
{{{6W=42}}}
{{{W=7}}}

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Now substitute W into the length expression to find the length. 

{{{L=2W+3}}}
{{{2(7)+3}}}
{{{14+3}}}
{{{17}}}

Therefore, the length of the rectangle is 17 meters, and the width is 7 meters.