Coding and Decoding Questions

In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the following question.

18 x 12 ÷ 5 - 10 + 10 = ?

In a certain code language, "NATURE" is written as "TANURE". How is "LISTEN" written in that code language?

If REDUCE= 56, RECYCLE = 71 then REUSE=?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

5 V 9 M 63 L 9 S 7 = ?

If MIGRANT is coded as LHFQZMS, then how will GEL be coded as?

If SELFIE = LXEYBX, then PHYSICS = ____

If SQUALOR is coded as USWCNQT, then how will WHY be coded as?

If 23@5=56; 6@7=26; 5@2=14; then what is the value of 7@5=?