Answer:
[tex] \boxed{ \bold{ \boxed{ \sf{12}}}}[/tex]
Option C is the correct option.
Step-by-step explanation:
Using PEMDAS rule :
Parentheses, Exponents , Multiplication , Division , Addition , Subtraction
Let's solve
[tex] \sf{3 \times (12 - 5) - 9}[/tex]
Subtract 5 from 12
⇒[tex] \sf{3 \times 7 - 9}[/tex]
Multiply the numbers
⇒[tex] \sf{21 - 9}[/tex]
Subtract 9 from 21
⇒[tex] \sf{12}[/tex]
Hope I helped!
Best regards!!
