We want to change215degree fernehite in to degree celcieous and repeat process of this by formula but answers?

we want to change215degree fernehite in to degree celcieous and repeat process of this by formula but answers are different. why?
formula: (1)degree F=5/9(F+32) BY THIS215F=101.6C
(2)degree C=9/5(C+32)BY THIS101.6=240F
WHY215F=101.6C=240 COMES BUT IT IS NOTPOSSIBLE

Answer:
your equations are wrong.

define:
C = number of degrees celcius
F = number of degrees Fahrenheit

- - - - - - - - - - - - - - "right eqn's"- - - - - - - - - - - - - -
i) F = 32 + C* 9/5
ii) C = (F -32) * 5/9
- - - - - - - - - - - - - - "right eqn's"- - - - - - - - - - - - - -

consider:
let F = 215
by our equation (ii)
C = (215 - 32) * 5/9
C = (183)* 5/9 = 101.66666.

take this 101.667 and "plug it in" to equation # (i)

C = 101.667

i) F = 32 + C* 9/5
F = 32 + (101.667) * 9/5 = 32 + 915.003 / 5
F = 32 + 183.0006
F = 215.0006

I would throw away the ".0006" as round-off error

notice that in your equations you have factors:

(F+32) and
(C+32)

you *can't* add "32" to degrees C since "32" comes from a Farenhiet scale ... and you would be adding "unlike entities"
look. to chang from F to C you subtract 32 then multiply by 5/9.
its really quite simple.C to F=temperature X split fraction 5 over nine +32,To do the reverse F to centirade is temperature X split fraction 9 over five .I believe its -32.One or the other.
fahrenheit to celcious
(215*5)/9-32 = 87.44 celcious.

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