7=-2/v+4

Question

solve for v

Answer 1

multiply each term by v

7v = -2 + 4v
3v = -2
v = -2/3

if you meant:
7 = -2/(v+4)
multiply both sides by v+4
etc

Answer 2

so the way i see it is 7=-2/v+4
-4 -4
3=-2/v
*-2 *-2
-6=v

Answer 3

So ignore that answer i put in. i apparently fail at math tonight. do not use my answeer