Question

Solve for the indicated variable A=r+rvf for v

Answer 1

`v = (A - r)/(rf)`

Explanation:

Given

`A = r + rvf`

Required

Solve for v

`A = r + rvf`

Subtract r from both sides

`A - r = r - r + rvf`

`A - r = rvf`

Divide both sides by rf

`(A - r)/(rf) = (rvf)/(rf)`

`(A - r)/(rf) = v`

Reorder the expression

`v = (A - r)/(rf)`

At this point, we;ve solved for v