V − E + F = 2 for e

V − E + F = 2 for e

To solve this literal equation, we want to isolate e.

Add E to both sides:
V − E + F + E = 2 + E

The E's cancel on the left side, so we have:
V + F = 2 + E

Subtract 2 from each side:
V + F - 2 = 2 + E + 2

The 2's cancel on the right side, so we have:
E = V + F - 2