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Best Answer

Set it up and follow the steps:

6f - 15 = 3 (then add 15 to each side to isolate the f's from the known numbers)

6f = 18 (then divide both sides by 6 to solve for f)

f = 3

prove by substituting 3 for f:

6(3) - 15 = 3

18 - 15 = 3

3 = 3

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Q: 6f-15 equals 3 what is f?
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