## Intermediate Algebra (6th Edition)

$x=-.24$
We are given the equation $9x+1.6=4x+.4$. In the next step, this equation is incorrectly simplified to $5x=1.2$. The correct way to simplify the equation is to first subtract 4x from both sides. $5x+1.6=.4$ And then subtract 1.6 from both sides. $5x=-1.2$ Divide both sides by 5. $x=-.24$