C = 5/9(F - 32)
Since we want to convert 12 degrees Celsius into Fahrenheit, substitute 12 for C in the equation and solve for F.
12 = 5/9(F - 32)
Distribute 5/9 inside the parentheses.
12 = 5/9F - 160/9
Add 160/9 to both sides.
268/9 = 5/9F
Divide both sides by 5/9.
F = 268/9 * 9/5 = 2,412/45 ==> 53.6
The question wants the final answer rounded to the nearest degree (ones), so the final answer is 54 degrees Fahrenheit.