Question 874388
{{{a^2+b^2=c^2}}}
Substitute
{{{(12x)^2+(5x+2)^2=(13x+1)^2}}}
Square
{{{144x^2+25x^2+20x+4=169x^2+26x+1}}}
Subtract 169x^2 from both sides
{{{20x+4=26x+1}}}
Subtract 20x from both sides
{{{4=6x+1}}}
Subtract one from both sides
{{{3=6x}}}
Divide both sides by 6
{{{1/2=x}}}
<h1>½</h1>