Respuesta :
[tex]\huge\text{Hey there!}[/tex]
[tex]\mathsf{20 + 3(18 - x)}\\\large\text{DISTRIBUTE 3 WITHIN the PARENTHESES}\\\mathsf{= 20 + 3(18) + 3(-x)}\\\mathsf{= 20 + 3(18) + 3(-1x)}\\\mathsf{= 20 + 54 - 3x}\\\large\text{COMBINE the LIKE TERMS}\\\mathsf{= (-3x) + (20 + 54)}\\\mathsf{= -3x + 20 + 54}\\\mathsf{= -3x + 74}\\\\\\\huge\text{Therefore, your answer is: \boxed{\mathsf{-3x + 74}}}\huge\checkmark[/tex]
[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]