18 - (-f) = 91 (With work please)

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Abdulmalek Dery asked Feb 18, 2022

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1 vote

18 - (-f) = 91 (With work please)

Mathematics
high-school

Abdulmalek Dery asked Feb 18, 2022

by Abdulmalek Dery

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2 Answers

26 votes

Answer:

f = 73

Explanation:

Solve for f

18 - ( - f ) = 91

Remove the parantheses and change their sign.

18 + f = 91

subtract each side by 18

18 - 18 + f = 91 - 18

calculate

f = 73

Gary Ford answered Feb 21, 2022

by Gary Ford

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21 votes

18 - (-f) = 91

Subtracting a negative value changes to addition:

18 + f = 91

Subtract 18 from both sides:

F = 73

Newday answered Feb 22, 2022

by Newday

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