Algebra Demystified 2nd Ed

188 algebra De mystif ieD

Solve the equation.

−=x 2

−

−

=

−

x −−xx

1

2

1

Remember that canbewrittenas; 1 thatis,

is itsownreciprocal.

x=−

−

2

1

Solve the equation.

−= 41 x^7

−=

−−







=−

1

4

7

4 1

4

47

x

x () Reciprocalshavethesammesign.

x=− 28

PRACTICE

Solve the equation.

1. 4x = 36


2. − 2 x = − 26
   3.^34 x=^24


3. −^1 =
   3

x (^5)
✔SOLUTIONS

1. 436
   4
   4

36

4

9

x

x

x

=

=

=

PRACTICE

Solve the equation.

1. 
   
   
   
   41. 
       
       
       
       41. 4xx=
       
       
       
       
   
   
   
   

PRACTICE

Solve the equation.