9. TBQ - Represent the situation in expression

Nira has a rare coin collection. She has 19 coins in one bag and 29 coins in another. She gifts her friend 12 coins from the second bag. Write an expression for the number of coins left with Nira. 

 

Expression : \((29 - 19) - 12\)\((29 + 19) - 12\)\(19 - (29 - 12)\)\(19 + (29 - 12)\)

 

Coins left \(=\)