Question

10. d = f + fx, for
f

Answer 1

f= d/ 1+x

Explanation:

Answer 2

f = d/(x+1)

Explanation:

Factor out f, then divide by its coefficient.

`d=f+fx\\\\d=f(1+x)\\\\(d)/(1+x)=f\\\\\boxed{f=(d)/(x+1)}`

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Additional comment

When writing this in plain text, parentheses are needed to perform the same grouping action that the fraction bar performs in a typeset expression:

f = d/(x+1)