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- Skala Termometer
Dari soal
tF = 2 tC ... (1)
Konversi dari skala Celsius menjadi Fahrenheit
tF = ⁹/₅ tC + 32 ... (2)
Substitusi (1) ke dalam (2)
tF = ⁹/₅ tC + 32
2 tC = ⁹/₅ tC + 32
¹/₅ tC = 32
tC = 160 ºC ←
dan
tF = 2 tC = 320 ºF ←
cek
tC = 160º → tF = ⁹/₅ · 160 + 32 = 288 + 32 = 320º
tF = 320º → tC = ⁵/₉ · (320 - 32) = ⁵/₉ · 288 = 160º cocok