1994 plus one half minus one and one third plus two and two thirds minus three and one third plus four and one half minus five and three thirds
Let me answer the formula
1994 + 1 / 2 - (1 + 1 / 3) + (2 + 1 / 2) - (3 + 1 / 3) + (4 + 1 / 2) - (5 + X / 3) = 1991 and 5 / 6 + X / 3. Since you didn't type the last sentence, I set the value after the third point to X. I'm very sorry