Answer:

Explanation:
Using PEMDAS rule
Parentheses, Exponents , Multiplication, Division, Addition, Subtraction
![\sf{4 [ 3 + 3(5 - 1) ]}](https://img.qammunity.org/2021/formulas/mathematics/college/2cbadw856pbd50edl3whj9phovtbnl2lsr.png)
Subtract 1 from 5
![\longrightarrow{ \sf{4 [3 + 3 * 4 ]}}](https://img.qammunity.org/2021/formulas/mathematics/college/dgbvzes6p85lxftnpmqhriufnvx0ejn402.png)
Multiply the numbers : 3 and 4
![\longrightarrow{ \sf{4 [ 3 + 12 ]}}](https://img.qammunity.org/2021/formulas/mathematics/college/3dcncsb3fmgmjoy6ignl6oaaj5o7gj3e7o.png)
Add the numbers : 3 and 12

Multiply the numbers : 4 and 15

Hope I helped!
Best regards! :D