Question 861399
The perimeter is 36m. {{{2l+2w=36}}}
If the width were doubled and length increased by 8, p=68 {{{2(l+11)+2*2w=68}}}
{{{2l+22+4w=68}}}
{{{2l+4w=46}}}
*[invoke linear_substitution "x", "y", 2, 2, 36, 2, 4, 46 ]