240 algebra De mystif ieD
The LCD is 9.9 5
932 9295
932
−
=
−()()(FFF ))()=−=
−=
−−
−=
−1853218
5 160 18
55
160 13
160
13FFF
FF
FF
F
==F(^) WhenFC=− =− − or
(^160) =− −
13
5
9
160
13
32 320
13
, 241138.^
- Degrees Celsius is represented by^59 ()F – 32 so twice degrees Celsius
is represented by 25
9 ()F – ^32
. We want for this to equal degrees^
Fahrenheit.FFFFFF=− =
−=25
93225
93210
9()()( −−=−
=
−329910
9329910
93)()(FFFF 2291032
910 320
10 10
320
1)()()()FF
FF
FF
F
F=−
=−
−−
−=−
−−==− −
=() 1 () 320
F 320When F==^320 , C 95 ()^320 −=^32160.