You can work out this equation. Let's set the math score as X, then English is (X-2) and Chinese is (X- 10).

∵ Average score 1 12, with three doors.

∴ The total score is 1 12 × 3 = 336.

∴ X +(X - 2)+(X - 10)=336

Solution: X = 1 16.

∴(x-2)= 1 14； (X - 10)= 106

That is, language achievement106; Mathematics 1 16; English is 1 14.