Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{60}}}}}[/tex]
Step-by-step explanation:
Using PEMDAS rule
Parentheses, Exponents , Multiplication, Division, Addition, Subtraction
[tex] \sf{4 [ 3 + 3(5 - 1) ]}[/tex]
Subtract 1 from 5
[tex] \longrightarrow{ \sf{4 [3 + 3 \times 4 ]}}[/tex]
Multiply the numbers : 3 and 4
[tex] \longrightarrow{ \sf{4 [ 3 + 12 ]}}[/tex]
Add the numbers : 3 and 12
[tex] \longrightarrow{ \sf{4 \times 15}}[/tex]
Multiply the numbers : 4 and 15
[tex] \longrightarrow{ \sf{60}}[/tex]
Hope I helped!
Best regards! :D