Jawabanmu

2014-02-14T21:37:55+07:00
F : C : R = 9(+32) : 5 : 4

77°F - 32 = 45

Celcius --> 45 x  \frac{5}{9} = 25°C

Reamur --> 25 x  \frac{4}{5} = 20°R
2014-02-14T21:40:19+07:00
77 F = 5/9 * (77 - 32 ) = 5/9 * 45 = 25 C
25 C = 4/5 * 25 = 20 R
20 R = 298 , 15 K