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Answer :

Answer:

B

Step-by-step explanation:

3 + f = 14 [tex]\frac{2}{7}[/tex] ← change to improper fraction

3 + f = [tex]\frac{100}{7}[/tex] ( multiply through by 7 to clear the fraction )

21 + 7f = 100 ( subtract 21 from both sides )

7f = 79 ( divide both sides by 7 )

f = [tex]\frac{79}{7}[/tex] = 11 [tex]\frac{2}{7}[/tex] → B

Answer:

B. [tex]f=11\frac{2}{7}[/tex]

Step-by-step explanation:

We have the equation 3 + f = 14 2/7

We need to get f alone, doing so is subtracting three from both sides:

3 + f = 14 2/7

-3     = -3

14 2/7 - 3 = [11 2/7]

Leaving us with f = 11 2/7

This is B.

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