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2014-03-25T07:05:55+07:00
Skala celcius : skala fahrenheit = 5 : 9 ( +/- 32)
40C= × F
 \frac{40}{5} =\frac{x - 32}{9}  
8= \frac{x-32}{9}
8×9 = × -32
72 +32 = ×
× = 104 F
1 5 1
2014-03-25T07:25:35+07:00
C : R : F      C = 40c
5 : 4 : 9
frac{40}{5} =\frac{x - 32}{9} 
8= \frac{x-32}{9}
8×9 = × -32
72 +32 = ×
× = 104 F