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Homework Statement
Express the formula for converting Celsius temperatures to Fahrenheit.
Homework Equations
C= (F+40)(5/9) - 40
The Attempt at a Solution
C= (F+40)(5/9) - 40
C- 40= (F+40 - 40)(5/9) - 40
(C-40)9/5= F(9/5)(5/9) - 40
(C - 40)9/5 + 40= F - 40 + 40
F= (C - 40)9/5 + 40
Answer: F= (C + 40)9/5 - 40
Could someone please explain to me why the operation signs in the (C + 40) and - 40 are opposite from the solution I came up with?