Solving the problem by working backward.
For Question number 8:
The final number is given as 8 (which is the result of all the operations)
Working backwards, Firstly we need to undo the addition of 4 by subtracting 4 from the result.
![8-4\text{ = 4}](https://img.qammunity.org/2023/formulas/mathematics/college/watbdfits5st2yhlfrk0r3fvo5fhxna5ab.png)
secondly, we will undo the division by 3, by multiplying the result above by 3.
![4*3\text{ = 12}](https://img.qammunity.org/2023/formulas/mathematics/college/sn559nbjxeweuh00zr1xw4bxx5d6nswnro.png)
Then we have our answer.
The number is 12