1. Initially a variable x is assumed as per the given data.

2. The number is now multiplied by 3,

=> New number = 3*x = 3x.

3. The number is now added with 5 with the above product,

=> New number = 3x + 5,

4. In the final step another variable y is subtracted from the new number,

=> Final number = 3x + 5 – y.

5. The resulting number is 3x + 5 – y.

Therefore, the resulting number is 3x + 5 -y.