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