Algebra Demystified 2nd Ed

Chapter 7 linear equaTionS 195

4520

55

425

4

4

25

4

25

4

x

x

x

x

+=−

−−

=−

=−

=−

Solve the equation.

3

2

1

6

2

9

1

3

xx−+=

We begin by identifying the LCD.

3
2

1

6

2

9

1

3

3

2

1

6

2

9

xx

xx

−+=

−+

TheLCDis18.

18 







=⋅ 18 1

3

18 3

2

18 1

6

18 2

9

6

27 346

24 46

44

24 2

⋅−⋅+⋅=

−+=

+=

−−

=

xx

xx

x

x

224

24

2

24

2

24

1

12

x

x

x

=

=

=