Algebra Demystified 2nd Ed

206 algebra De mystif ieD

Solve for b.

Aa=+bh

=

1

2

() A(andaaredifferentvariables.)

A^11

2

1

2

1

2

1

2

1

2

abh

Aah

 +















=+

isdistributed

bbh

Aahhb

ah a

(ihsdistributed)

=+







−−

1

2

1

2

1

2

1

2

hh

Aahhb

A ah hbhh ah ah

−=

−=  ==





1

2

1

2

22

1

22

1

22

and



 −







=⋅

 −







=

2

2

2

2

2

2

h

A ah

h

hb

h

A ah b

or

22

2

2

A

hh

ah b

A

h

ab

−⋅ =

−=

or

2 Aah

h

− =b

PRACTICE

Solve for indicated variable.

1. Ab = ;hh^

1

2

2. C = 2or; r

PRACTICE

Solve for indicated variable.

PRACTICE

Solve for indicated variable.