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

User Karuto
by
5.0k points

2 Answers

3 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

User Thandasoru
by
4.2k points
4 votes

18 - (-f) = 91

Subtracting a negative value changes to addition:

18 + f = 91

Subtract 18 from both sides:

F = 73

User Masb
by
4.4k points
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