Coding and Decoding Questions

In a certain language, if PLATE is written as CYNGR, then SHOCK will be written as

If 9@3=12; 15@4=22; 16@14=4; then what is the value of 6@2=?

If 8*2 = 3, 14*18 = -2 and 18*2 = 8, then find the value of 14*10 = ?

If I=9 and SLIP=56, then FALL= ?

If "A" denotes "multiplied by", "B" denotes "subtracted from", "C" denotes "added to" and "D" denotes "divided by", then

8 B 31 C 49 D 7 A 16 = ?

If 23 x 16 = 184, 37 x 10 = 185, then 85 x 12 = ?

If 9x3=3; 15x3=5; 60x5=12; then what is the value of 27x3 = ?

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.
 
15 x 4 ÷ 35 - 70 + 16 = ?