To change fahrenheit temperatures to celsius temperatures, you can use the formula c = 5/9(f – 32). which answer is the best first step to solve the equation for f? a. add 32 to both sides. b. subtract f from both sides. c. multiply both sides by 9/5. d. divide both sides by f.

C. Multiply both sides by 9/5.

C = 5/9(F – 32)

We want to isolate F, which means we need to get F alone.

The quantity in the parentheses is multiplied by 5/9.  We need to do the opposite, or multiply by the reciprocal to isolate the parentheses

9/5 C = 9/5* 5/9(F – 32)

9/5 C = F-32

This is the first step in isolating, or solving, for F

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answer: d.) the total number of protons and neutrons is 15

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