### Home > CCAA > Chapter 6 Unit 9 > Lesson CC3: 6.1.1 > Problem6-4

6-4.

Which equation below has no solution? Explain how you know.

1. $4(x+1)=2x+4$

Solve the equation for $x$.
$4x+4=2x+4$
$4x=2x$

All you need to know is that equation (a) has at least one solution.

In this case, $x$ could $=0$.

1. $9-5x+2=4-5x$

Follow the steps in equation (a).

This equation has no solution.