Answer:
f = 3
Explanation:
equation:
3f -12 = -3
isolate 3f by adding 12 to both sides of the equation:
3f = 9
divide both sides of the equation by 3 to get find f:
f=3
3f-12=-3, FIrst add 12 to both sides
3f-12+12=-3+12
3f=9, Next divide both sides by 3
3f/3=9/3
f=3; f is three.
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