How do you solve for x in 42x+x=13?

1 Answer
Feb 7, 2015

Okay start by

Rewriting equation as 42x=13x

Now square both sides

So we are left with the equation 42x=(13x)2=x226x+169

Next step bring all the terms to one side of the equation
SO x226x+16942+x=0

So using the quadratic formula i get that The values of x are = x=17.908326913195985,7.091673086804016