### Home > CCA > Chapter 1 > Lesson 1.1.3 > Problem 1-28

1-28.

Solve the equations below for *x* and check your solutions. Homework Help ✎

Add 3 to both sides.

−3 + 2*x*= −*x*+ 6

+3 +3

2*x*= −*x*+ 9Add

*x*to both sides.

2*x*= −*x*+ 9

+*x*+*x*

3*x*= 9Divide both sides by 3.

x = 3

Substitute 3 back into the original equation.

− 3 + 2(3) = −(3) + 6

−3 + 6 = −3 + 6

−3 = −3

It works!Refer to part (a).

*x*= 1*x*= −1.5Use the same method as parts (a), (b), and (c). Make sure to check your answer as shown in part (a).