The perimeter<span> of an </span>equilateral triangle<span> is 7 </span>inches more than<span> the </span>perimeter<span> of a </span>square<span>, and the </span>side<span> of the </span>triangle<span> is 5 </span>inches<span> longer </span>than<span> the </span>side<span> of the </span>square<span>. </span>Find<span> the </span>side of the triangle<span>. (Hint: An </span>equilateral triangle<span> has three </span>sides the same length<span>.</span>