Answer:
f=e/2
Explanation:
To make f the subject, we want to isolate f.
e=2f.
We see that e is equal to two times f, or two f's.
Divide by 2 to isolate f.
e/2=f
However, normally we want f on the left side, so we have:
f = e/2
e = 2f
Switch sides.
2f = e
Divide both sides by 2.
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