Question 711201
You can write 2 equations from the given information.
Define the following variables:
L=length
W=width
P=perimeter
{{{L=2W-3}}}
{{{P=2L+2W=90}}}
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Solve 2nd Equation for L in terms of W:
{{{2L+2W=90}}}
{{{2L=90-2W}}}
{{{L=(90-2W)/2}}}
{{{L=45-W}}}
Substitute this expression for L into the first equation, and solve for W:
{{{45-W=2W-3}}}
{{{2W+W=45+3}}}
{{{3W=48}}}
{{{highlight(W=16)}}}
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Substitute this value for W into the second equation and solve for L:
{{{2L+2(16)=90}}}
{{{2L+32=90}}}
{{{2L=58}}}
{{{highlight(L=29)}}}
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Good Luck,
tutor_paul@yahoo.com