Answer: =3x+3
Step-by-step explanation:
[tex]3\left(x+1\right)[/tex]
[tex]\mathrm{Apply\:the\:distributive\:law}:\quad \:a\left(b+c\right)=ab+ac[/tex]
[tex]3\left(x+1\right)=3x+3\cdot \:1[/tex]
[tex]=3x+3\cdot \:1[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:3\cdot \:1=3[/tex]
[tex]=3x+3[/tex]
