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.
- Ab = ;hh^
1
2
- C = 2or; r
PRACTICE
Solve for indicated variable.
PRACTICE
Solve for indicated variable.